Human Nature suggests that 99% of us would get greedy, that's why 99% of us lose.
I trade a FX spot account, no major blow outs since dropping margin from 200x's to 50x's, I run my account, 1 position right upto the 50x's Margin allowanceand will keep doing this until I can' trade larger all being well.
I got in a market short Monday, took profits Tuesday, and saw I left big $ on table Wednesday (today). Nothing is certain in markets, all probabilities.
Stats I have seen repeatedly: 91% traders lose, 9% are consistent winners. You would think someone who keeps trying to improve could get into that 9% club. My foot is in the door.