Always go into a hero dose with an objective. Look at yourself, decide what it is you would like to better, what belief system you want to re-look at, what you might want to remodel in your life. Spend 3 weeks, visualizing what that change might look like, go into the trip with the belief that it will work and will be effective, once you on the trip, close your eyes, go internal and break whatever your ego is preventing you from further emotion maturity, a better quality of life, better relationships, a softer more gentle temperament, more forgiving to yourself and others. There is so much you can work on, it's never ending. Once you do it properly, you will come away with it a far better person to yourself and your loves ones. Think of doing it like step for work for NA or AA where you write a life story in step 3 or I can't remember offhand and you put down all bit of detail of your life starting from as young as you can to where you are now. Look at how you got to where you are now, look at the things you have done right but be completely honest about what you have done wrong, where it be verbally or physically abusive, driving under influence, self destruction, destruction of relationships, always blaming others, whatever it might be, I'm throwing stuff out there and this will help you workout why and how you have the belief systems you have today, maybe to justify certain actions, or maybe to protect yourself from hurt, the list of so long. And then you go into that trip and you take 1 of those points and you work on it for 3 weeks before, then go into that space and allow yourself to break free of whatever it might be that has been inside of you for however long, and release it, and at the same time forgive yourself, remove all self hate, anxiety, low confidence you might have about yourself that you may have bottled up and when it's over you will find such a relief within yourself, you will feel something that I can't explain, something extremely radical that is not possible via CBT or psychology or whatever it might be with the ego in the way.
"Whether You Think You Can or Can't, You're Right"--Henry Ford