I can certainly agree that OP shouldn't "waste" time pondering on those feelings because they're unlikely to go away. I've changed career in my late 30s as well

I can certainly agree that OP shouldn't "waste" time pondering on those feelings because they're unlikely to go away. I've changed career in my late 30s as well and getting a late (re)start in life is very daunting and any lengthy dwelling takes a real toll on your mental health.