Kirk Hammett didn't set out to become a rock star — he just wanted to learn to play the guitar. When something worked, he wanted more. Metallica went on to sell 110 million albums. Passion arrived through the work, not before it. Research consistently shows that motivation follows action rather than preceding it, which means waiting for the right feeling is almost always the wrong strategy. The full summary breaks down the exact mechanism behind why this cycle works the way it does.