Most often I can't buy or hold very long. Especially a day after a lost. Today I had 2 nice stock, It was going up and up, I remembered not to buy at top... well it was just going up and up. I did not buy. Another one, I waited, waited, then I bought, but I hold less than 1 min.
Sounds like you need to adapt a trading/investing strategy and stick with it. You're also doing it for WAY too much money if you're worried about it that much this early in your stock market career. Based on your comments, I'd recommend doing some paper trading. You can google it and find a simulator. Set your starting amount to the amount you have in your real account, that way you'll get an idea on what you're comfortable with. It does no good to start with $500K and gamble hundreds of thousands on paper money if it's not the same situation you're going to be in in real life when you get back in.
When I started actively trading, I made myself put an equal amount of money into mutual funds run by Fidelity and Vanguard. -THIS- relaxed me exponentially since I knew that if I blew up (which, let's be honest, 97% of traders do sometimes) I rested easy knowing I'd put an equal amount into other potentials. This, and ahem, 'maturity' saved me.
