Humanidad – Entheogenic Healing Center specializes in holistic detoxifications and healing conditions such as Depression, Post-Traumatic Stress Disorder (PTSD), Addiction to barbiturates or substances that create dependency. The treatments are guided by Guillermo Guillen, who has worked for more than 7 years with Entheogens and Master Plants, specializing in healing the conditions previous mentioned.

We follow a non-dogmatic discipline and have no religious or philosophical affiliations whatsoever. We provide a holistic and resourceful approach on healing by blending eastern, western and plant medicine. Our approach to the sacred use of entheogens and proper rituals with master plants is one of utmost respect that abides to the amazonian safety protocols and regulations.

Vision / Mission

Humanidad is a calling towards humility and service. Our purpose is to reconnect individuals to their own self-healing power and guide them to find the necessary strength so they can lead their lives from the wisdom that resides within them.

Our intention is to create a holistic sanctuary that can provide a safe environment for healing and spiritual development. We also aim to develop a research platform for the use of entheogens for therapeutic purposes to contribute towards the demystification of chronic diseases through scientific and case studies.


Many people ask me what I am. Am I a shaman, healer, spiritual guide or a wizard?

I have always answered that I don’t want to be labeled as anything. I feel that people who present themselves in that fashion probably are not any of these things. I believe that anyone real would not be disguising behind a title, but rather just showing oneself without a mask. This is the main reason why I am not changing my name to a “spiritual” one. If I could remove my birth name, I would. My objective in life is to come out of everything I think I am and not add more to it. 

My spiritual journey started very young when I realized for the first time that I was communicating with God.  I also noticed that the majority around me was not. I was born with chronic Asthma and had to be very much isolated for the first 7 years of my life to prevent seizures from happening. I never felt that I was alone as the presence of God was there with me all the time as my friend and companion.  The abandonment of my father at that time made me question everything of life, love and even my friend God. I decided to disconnect the presence of God and began my search for something real, which led me to quite complex and difficult situations. The world did not make any sense and after exploring most religions, I decided to become agnostic. My teen years furthered me into a way deeper confusion that steered me to the darkest of myself that allowed me to embrace and reconnect a conscious communication once again with God. 

This experience of life has been a cycle of deep tunnels which has driven me to visit the most ignorant parts of myself.  The universe in its infinite compassion, has guided me to go through them in order to be able to find wisdom once again.

The journey has been absolutely incredible and I am eternally grateful to everyone who has contributed towards my growth and development. I am especially grateful for the opportunity to become the father of my son and for the trust of more than 400 people who allowed me to serve their healing process for the last 7 years while creating a healing center in Rio Dulce, Guatemala. The coexistence with all these wonderful people and the comprehension that I obtained through their healing processes, is what mainly has transformed me into the human being / teacher / mother / guide / friend to those who seek their own healing, self-realization and freedom.

Every human being has the possibility to heal themselves and let go the suffering inherited for hundreds of centuries. In order to do so, we must get out of the false concepts conditioned by the western thought methodology that is based on fear that we have accepted as reality or truth. We must dare to heal ourselves addressing the unknown of the heart and begin to create a life based in our natural state of love. As we are able to transform our suffering into wisdom, we can find the light within ourselves that we are here to share and offer as spiritual beings.

I invite you to listen to the experiences of others and feel in your heart if I can assist you in your own personal healing. Hopefully we will get to meet if you ever feel the calling to choose this sanctuary as the place for your healing journey. It would truly be a great honor for me to assist and serve your process.


Two years ago I decided to give a quality shift to my life. I quit my job and started to travel alone through Central America in a journey to discover myself. I was amazed to everything that was happening during that time, but was missing something that I needed to find. It was at the end of my 6th month, before returning my first time to Switzerland when I met… Read More “UNCONDITIONAL LOVE”

October 7, 2019

Guiando la vida desde el corazón

Mi experiencia en los procesos que se viven en Humanidad, junto con la guía de Guillermo, han sido unos de los momentos mas especiales e inolvidables en mi vida. Los diferentes procesos de sanación que he realizado me han servido de guía en diferentes situaciones y dificultades  en donde no encontraba una respuesta. Cada uno de los procesos me han ensenado de diferentes maneras el camino correcto y he aprendido… Read More “Guiando la vida desde el corazón”

July 19, 2018
Hector Paredes

Humanidad is a safe heaven

I’ve known Guillermo for 3 years now and I was beyond excited to be back in Guatemala. Humanidad is a safe heaven for those of us who are looking to reconnect with ourselves and nature. Guillermo is the perfect person to guide us through the steps that must be taken to accomplish this. The Humanidad Center is a wonderful place in San Pedro de la Laguna, Lake Atitlan, where you’re… Read More “Humanidad is a safe heaven”

July 21, 2018
Monica Jones

Un abrazo del universo

Llegue a este camino cuando me encontraba en una crisis de pánico, sentí que no estaba viviendo la vida que me merecía y eran tantos mis miedos que me llevaron a buscar una solución profunda y real; puedo decir que llegue con tanto miedo y prejuicios hacia el proceso y con una mente fuera de control que racionalmente nosé como me atreví a intentarlo, ahora se que era Dios guiando… Read More “Un abrazo del universo”

July 13, 2018
Ana Gabriela Paredes Solares

Supportive and beautifully natural setting

We loved our day long couples ceremony and how welcoming and warm Guillermo´s retreat centre was. It actually made our purging pleasant! The sauna and the homemade healthy food was also amazing. Our picnic outdoors by the peaceful Lake Atitlan, the herbal tea and beet juice blend was just perfect and so comforting after our ceremony. We could not of asked for a more supportive and beautifully natural setting for… Read More “Supportive and beautifully natural setting”

September 11, 2019
Martin and Charity

A life reset

I left Humanidad about three months ago, after a one-month psycho-spiritual development treatment, and I am still processing the changes that have happened since then. I came with a rather vague idea of what to expect, both in terms of process and teachings, and left with lessons that will stick with me for life and opened new paths of self-exploration.
It was intense at times, but Guillermo supported me… Read More “A life reset”

January 25, 2023

1 Month Plant Dieta

Hello dear reader 🙂 here comes my 1-month personal experience and what might be similar for you if you decide to do the same.
First what I want to share is… if you want to change something in your life or badly want to let go something that you know it is not good for you, this is one of the best places in the world where you can… Read More “1 Month Plant Dieta”

March 10, 2023
Samuel Knechtl

Transformational experience

My 5 day retreat with Guillermo has been one of the most beautiful and moving experiences of my life. I met Guillermo and his team on a talk about entheogens and medicinal plants and I immediately felt an amazing trust towards Guillermo’s respect of the healing processes and immense knowledge of the plants. Since years ago, I have been curious about exploring my inner universe through Ayahuasca and I signed… Read More “Transformational experience”

August 23, 2019
Mariel Orellana

Heart opening experience!!

Me and my partner did 3 Kambo sessions three days in a row with Guillermo in Lake Atitlan, Guatemala. It was the most beautiful and heart opening experience.
Guillermo created such a beautiful, safe and sacred space and served with such humility that which I have never experienced before.
We are so grateful for this man, the work he is doing and all he has to offer.
Read More “Heart opening experience!!”

July 12, 2018

From the depth of depression to a gratefully joyous life

It was the last straw that gave me the courage to seek help; not knowing what was to come. Now, 3 years later I come to the realization that it was the greatest gift to myself. I understand now that the main reason for my depression laid in the fact that I had become a full atheist and not a good one at that. I was an angry and a… Read More “From the depth of depression to a gratefully joyous life”

September 3, 2019
Joseph Tae K. Kwon