A good article on CNBC that has very useful thoughts for traders as well. The five key points:
1. ‘TRY ON’ A POSITIVE LENS
2. TAKE NOTE OF THE COMPANY YOU KEEP
3. TURN OFF THE NEWS
4. WRITE IN A JOURNAL FOR A FEW MINUTES EACH DAY
5. ACKNOWLEDGE WHAT YOU CAN — AND CANNOT — CONTROL
Obviously the turning off the news is not feasible for a trader, but acknowledging what we can and cannot control is vitally important.