Flexibility, basic trust, philosophic faith, human openness, courage, interpersonal warmth, creativity, allow for fun and easy learning. Rigidity, desire to control, distrust, cynicism, narrowness, cowardice, coldness, make any new situation threatening. Most important is insight. The person who has some understanding of his own machinery, who can recognize when he is not functioning as he would wish, is better able to adapt to any challenge - even the sudden collapse of his ego. Immediate set refers to expections about the session itself.
People naturally tend to impose personal and social perspectives on any new situation.
For example, some ill-prepared subjects unconsciously impose a medical model on the experience. Occasionally, ill-planned sessions end in the subject demanding to see a doctor. Rebellion against convention may motivate some people who take the drug. LSD offers vast possibilities of accelerated learning and scientific- scholarly research, but for initial sessions, intellectual reactions can become traps. The objective is to free you from your verbal mind for as long as possible.