Stay the course. When thwarted try again; harder; smarter. Persevere relentlessly.
The purpose of discipline is not to punish, but to correct.
If I were a young coach today, I would be extremely careful in selecting assistants.
Never let your emotions overrule your head.
We should never let ambition cause us to sacrifice our integrity or diminish our efforts in other areas. However, we need to remember that we never reach a serious goal unless we have the intention of doing so.
I believe we are most likely to succeed when ambition is focused on noble and worthy purposes and outcomes rather than on goals set out of selfishness.