1. A good trade is taken with complete confidence, and follows your trading method. A bad trade is taken on an opinion. 
2. A good trade is taken with a disciplined entry and position size. A bad trade is taken to win back losses the market owes you.
3. A good trade is taken when your entry parameters line up. A bad trade is taken out of fear of missing a move. 
4. A good trade is taken to be profitable in the context of your trading plan. A bad trade is taken out of greed. 
5. A good trade is taken according to your trading plan. A bad trade is taken to inflate the ego.
6. A good trade is taken without regret or internal conflict. A bad trade is taken when a trader is double-minded.