Introduced by painful experiences in childhood, self-doubt weaves itself into the fabric of your identity. Self-doubts and Mind Traps are hardy enough to withstand overwhelming conflicting evidence. They are even resistant to good common sense - no matter how much some people may love and respect you, you may still doubt yourself. And you may find yourself sabotaging your own welfare. The wimp is a pessimist.
Optimism is a methodology or technology that can be learned.
Doing so will eventually defeat the wimp. This imperative to express our power and experience control is central to human behavior. Every human does something to express his or her power in the world. This power can be expressed creatively or destructively. Humans first attempt to express their power creatively.