Trading hours and decision making
You should make your overall (long or intermediate term) decisions before the trading hours and you should not change your general overview of the market during trading hours. Look at the bigger picture.

Breaks & presents
Take breaks from trading, don’t trade every day – after couple of weeks, make presents to yourself if you have been successful, go abroad or something like that. If you haven’t made profit, just take a couple of days off.

Crowd is wrong
Don’t follow the crowd, historically the public tends to be wrong. If everyone are buying, it might be good idea to start thinking of going short. If 85% of the market analysts are bullish, the market is most likely overbought, if less than 25% are bullish, it’s probably oversold.

Bets are bad
Don’t make bets. You don’t have to make trades multiple times a day or even every
day. Make trades only when you have a good reason to go into the trade. Wait for
an opportunity. If in doubt about the trade you have done, reduce the size or get out
of the trade.