Interesting topic for me. I've been trading for only a few weeks, in addition to another few weeks of paper trading. The first week of staring at the tradestation matrix window, wishing for the little price indicator to go in the direction I wanted was really stressful. I had a stress headache every day that first week and I wondered if I could handle the pressure long term, despite the fact that I've made money fairly consistently.
Since that first week, I've made it a part of my trader development to actively control my stress. I try to keep other things to do during the trading day so that once I set up my entry, stop, and target... I look away from the screen and wait to hear my audible alerts. In the meantime, I learn more about trading by reading, I write software, I even watch hulu if I really need to distract myself. Maybe I should set up another computer for World of Warcraft.
As I get more comfortable with trading and practice keeping myself distracted during the actual trade, I find my stress levels going down. I haven't had a headache in about a week, so that's a good sign.
I mean, what good is the money you make if you have a heart attack or stroke within 5 years?