1) Don't burn the bankroll.
2) RESPECT the trade. It can and will go south on you many times. Control the loss and move on. No big deal.
3) Patience is also a postion. Be aware of the hope, fear and greed.
4) Understand the "Why" of your trade. Why did you enter? (Moving averages, MACD, Stochs); Why will you exit? (Stops)
5) Market, Sentiment, Fundamentals, Technicals.
6) Trade small enough that emotions do not affect your decisions.