That's one reason why I don't "get out," apart from personal commitments -- I have confirmation that what I am working on is both useful and true. I can't ask for more than that to keep me going in this direction.
Erick, I "get out" and have done so, in relation to internal strength, for about 35 years. I also have a fairly analytic mind and got many 'confirmations' along the way. The problem is that information about the full spectrum of "internal strength" skills is very limited and you can't extrapolate it all by yourself. Get out and beat the bushes.