One of the best ways of repressing emotions is artificial certainty.
The manic relief that comes from the fantasy that we can with one savage slash cut the chains of the past and rise like a phoenix, free of all history, is generally a tipping point into insanity, akin to believing that we can escape the endless constraints of gravity, and fly off a tall building. “I’m freeeee… SPLAT!”.
It is a mistake to look at someone who is self assertive and say, "It's easy for her, she has good self-esteem." One of the ways you build self-esteem is by being self-assertive when it is not easy to do so. There are always times when self-assertiveness requires courage, no matter how high your self-esteem.
The purpose of the false self is to defend against pain - not deal with reality
Does it not occur to people that I might be artificial by nature?
Ideally a painter (and, generally, an artist) should not become conscious of his insights: without taking the detour through his conscious reflection, his progressive steps, mysterious even to himself, should enter so swiftly into the work that he is unable to recognize them in the moment of transition.