To be champion requires more than simply being a strong player; one has to be a strong human being as well.
Waging war we understand, but not waging peace, or at any rate less consciously so.
Never continue in a job you don't enjoy. If you're happy in what you're doing, you'll like yourself, you'll have inner peace. And if you have that, along with physical health, you will have had more success than you could possibly have imagined.