This exercise is useful in showing people how resourceful they already are. People who suffer from lack of self-esteem tend to focus on their weaknesses or to blame others for their problems. This lack of belief in their abilities makes them less confident which in turn confirms their negative beliefs. Most of their energy is then spent figuring out who did wrong and who is to blame.
This exercise helps to break this cycle by highlighting that everyone has certain resources and strengths that they can tap into. When a person doesn’t see his strengths, he starts to develop a defeatist personality. This exercise helps bring positive strengths and qualities to surface, kick starting a more positive view of life.