I’ve always liked this one. Sticking with Bruce Lee here…
I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.
You might ask yourself, how the hell does that help me? Well if you want to master anything in your life you need to dedicate yourself to it. If you continuously jump around trying to learn new trades, keep changing jobs or changing careers paths, etc you’ll never progress and you’ll always be stuck back at the bottom.