my clients, "a profit is a profit that's all that counts, the size is irrelevant" I don't always stick to that but usually regret not using my own advice. I will say the last couple years my usual habit is to be out at the end of the day except for spreads which most of my cattle and corn trades end up a spread. Being out at the end of day really keeps the anxiety stress a non issue.
Most of my clients are hedgers so they can take on more risk. If being a trader requires sleep and capital, I'd better stop right now because I don't have enough of either one. I have built up sufficient capital but that's for retirement so I have to be careful that I don't do something stupid, my wife would make life a nightmare if that happened. Lack of capital when I started, forced my low pain tolerance to dictate damage control to be at low levels. That became a valuable habit that I seldom break except for once or twice a year when I go brain dead. I'm starting to believe that's due to lack of sleep.