My answer,
Have both a trading and a core position.
Then,
1. You're never out of the game.
2. You can trade some so that the danger of second guessing yourself is minimized.
Either way you can't go wrong.
Also, most important:
You never get hurt taking a profit, ever.
My #1 rule,
Take profit,,,,,,,,, don't try to be perfect.
No one is.
Over