Co-wise: What habits help you become a better trade?

I have three trading principles of my own.
1. Establish my own trading philosophy, whether it is long-term, medium-term or short-term speculation. Insist on operating in accordance with my own philosophy, not affected by market sentiment and various noises. It is very difficuty to do but I am trying.
2. Doing my own home works and research. Before buying or selling stocks, asking myselfe the reason why I need to buy or sell this stock. Knowing the underlying logic of buying and selling stocks.
3. Insist on controlling positions. Setting up trading rules such as investing my own money which doesn't affect my normal life, always keeping enough cash in hand, stopping losses and etc...
I believe " The longer who lives in the market, the winner is."