You must learn to be still in the midst of activity and to be vibrantly alive in repose.
David Lee Roth had the idea that if you covered a successful song, you were half way home. C'mon - Van Halen doing 'Dancing in the Streets'? It was stupid. I started feeling like I would rather bomb playing my own songs than be successful playing someone else's music.
Once you get to that point when you can just be yourself and relax, I just think that you're so much happier in general.