What do you mean by set?
I did my only heavy (3.5g) dose on my bed in the dark, after reading that Terrence McKenna said to do that. Honestly did not enjoy it much and didn't gain much. Don't think that type of trip is good for people who are already very overly internal thinkers. A good spot in nature seems a lot better because you would focus more on the beauty of the world - which is really the cure for any overthinkers anyway.
Since then I've just done a few .3-5g microdoses that I've enjoyed a lot in a subtle way.
Set and setting - Wikipedia
Set and setting, when referring to a psychedelic drug experience, means one's mindset (shortened to "set") and the physical and social environment (the setting) in which the user has the experience. This is especially relevant for psychedelic experiences in either a therapeutic or recreational context. According to the book How to Change Your Mind by Michael Pollan, the concept of set and setting was observed by the "Johnny Appleseed" of LSD, Al Hubbard visiting mushroom ceremonies in Mexico. The terms were used at least as early as 1958 by Ludwig von Bertalanffy and popularized by Timothy Leary in 1961, and became widely accepted by researchers in psychedelic therapy.[1][2] Norman Zinberg has also discussed this in Drug, Set, And Setting: The Basis for Controlled Intoxicant Use (1984).
"Set" is the mental state a person brings to the experience, like thoughts, mood and expectations. "Setting" is the physical and social environment. Social support networks have shown to be particularly important in the outcome of the psychedelic experience.[3] They are able to control or guide the course of the experience, both consciously and subconsciously. Stress, fear, or a disagreeable environment, may result in an unpleasant experience (bad trip). Conversely, a relaxed, curious person in a warm, comfortable and safe place is more likely to have a pleasant experience.
I prepare for one week. Avoid negative shit, disturbing movies/tv, discussing politics, toxic people etc. Take care of body, relax, eat clean. If when you are gonna take the substance feel so good that you hesitate because you feel that you need to take it, then you know you have prepared well and it will be a really good trip.