What's Your Favorite Underrated Investment Tip?

I’m always on the lookout for investment strategies that don’t get enough attention, kind of like discovering a hidden indie film that blows you away. Recently, I’ve been focusing on investing in small, niche tech companies that are solving real-world problems but aren’t yet mainstream. It’s not flashy, but the growth potential feels solid. What’s the most underrated tip you’ve come across in your own investing journey?