Our greatest fear is fear of success. When we are succeeding — that is, when we have begun to overcome our self-doubt and self-sabotage, when we are … - Steven Pressfield

Habit will be your champion. When you train the mind to think one way and one way only, when you refuse to allow it to think in another, that will produce great strength in battle.

Resistance will tell you anything to keep you from doing your work. It will perjure, fabricate, falsify; seduce, bully, cajole. Resistance is protean. It will assume any form, if that’s what it takes to deceive you. It will reason with you like a lawyer or jam a nine-millimeter in your face like a stickup man. Resistance has no conscience. It will pledge anything to get a deal, then double-cross you as soon as your back is turned. If you take Resistance at its word, you deserve everything you get. Resistance is always lying and always full of shit.

In my view, the amateur does not love the game enough. If he did, he would not pursue it as a sideline, distinct from his “real” vocation.