The theory of Doubt

I have a theory about when we learn at school, and we achieve something that it helps out self esteem, which wants (or gives us believe) that we can achieve more. This is how you build yourself on little tasks and also increases your own ability. Others who haven't learn t this, tend to start tasks and get nervous, which things don't progress exactly how they thought they would. It then tasks daily self "maintenance" to keep things moving- Everyone have some self doubt, but those who achieve, thing above the voices ;)