You get as much out of rock & roll artistically as you put into it. There's nobody who can teach you. You're on your own and that's what I find so fascinating about it.
Manipulate your diet until you find something that works for you. I think people get bogged down with trying to go to the gym and doing too much cardio and lifting too much weight. Really, if you're eating well and eating at the right times, and consuming the right things, it's really helpful.