Successful trading is composed of 80% suffering and 20% pleasure. By suffering I mean the time spent:

- Addressing your weaknesses.

- Recognizing the times when you are wrong with zero ego involved.

- Having the patience to not overtrade during your losing periods.

- Sticking to your plan through good and bad and especially through bad.

These are only four of the boxes that a successful trader ticks daily. If I had to condense all of that into one short sentence, I would go for A small ego can equal huge returns.