Strategy vs Psychology

Which is more difficult to do?

A) Developing a trading system with an edge


B) Executing that system , sitting through the drawdowns , and doing it with 100% discipline.

Yes I know. It’s like that nagging question.
What’s the difference between a novel and a book?

Both. You know you have arrived when you master both. Easier said than done. But one needs to love trading so so much, to see it through the end.

Trading Psychology is more diifficult than trading ur stretegies i bet.

Psychology is much harder to master, your mind can create handful of strategies for you but of what use are those if you aren’t able to execute them and aren’t disciplined?