I don't have a lot of experience at this. I have only gone completely broke 3 times. Everytime was the same. Started with a small loss, became a big loss, became an obsession, became a depression, liquidated all winning positions to meet margin on big losing position.
Coincidence? I don't know. I don't have enough money to thoroughly test the relationship between hanging on and going broke.
In the rest of this lifetime, I will have to be content with just taking small losses, and merely wonder about how great I could be if I never took a loss.