Actual goldmines proving to yield lifelong returns — in terms of joy, productivity, success, wisdom, and (spiritual) growth. 100,000+ self-help books exist today — and 15000+ new ones join the fray every year. How in the world do we navigate this ocean? Success gurus’ recommendations? Goodreads reviews? Celebrity reading lists? “More For You” algorithmic picks? Serendipity? Book-bloggers’ list(icle)s?…