Everyone can finish the phrase, but it's true. Fear is the only thing we should be afraid of in this world. When things work for me, it's when I just go straight at a thing. Not worrying about anything, just going after the goal or target without self-consciousness or concern over the outcome. When things go poorly for me, it's when I do the exact opposite and obsess over what people will think of me, or how things will turn out.
It's so much easier said than done, but it's the only path. Our fears and worries are our only enemies. Things won't always work when you take the fearless approach, but things will never work if you don't.
This is a daily practice and some days are better than others, but like anything else, it's a process.