The stock has fallen on hard times, but the business is primed for success.With ongoing geopolitical conflicts, trade wars, interest rate uncertainty, and more, is now really the time to be investing in stocks? In my experience, there are always reasons for pessimism. But regularly adding new money to stock investments has historically always been part of a winning philosophy.For this reason, I'm always on the lookout for stocks to add to my own portfolio. And cosmetics company e.l.f. Beauty (ELF +0.59%) mi ...