Studies have shown that 90% of error in thinking is due to error in perception. If you can change your perception, you can change your emotion and this can lead to new ideas.
Edward de BonoTo develop thinking as a skill, it should be deliberate, focused, confident, and enjoyable.
Edward de Bono(...) being right all the time acquires a huge importance in education, and there is this terror of being wrong. The ego is so tied to being right that later on in life you are reluctant to accept that you are ever wrong, because you are defending not the idea but your self-esteem. (...) this terror of being wrong means that people have enormous difficulties in changing ideas.
Edward de Bono