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) You may not agree with another's positions but DO NOT discount them. Allow for other perspectives.
5) Market, Sentiment, Fundamentals, Technicals.
6) Trade small enough that emotions do not affect your decisions.