Exercise is mental.
Intuitively, you know this. It might be what attracts you the most to your exercise practice. It might also be what keeps you from it.
The key relationship between exercise and the mind nullifies the assertion that deliberate physical effort is boorish or wasteful of your precious (and I mean that!) time. It is undeniable at this point that exercise is an essential component of increasing both physical and mental health.
The key is to act on that fact. Help is available if needed.
All you need is a good mix of humility and willingness.