Guitar Messenger recently posted a nice interview with Eric Johnson taken while Johnson was on the Experience Hendrix tour. There’s both video and a transcript of the interview that you can read. In the interview, Johnson gives some good advice to aspiring musicians:
I think just have fun with the instrument. I think maybe the most important thing is to play what really gives you joy on the guitar, and couple that with pushing yourself. You have to be discriminate, and you have to push yourself, I think, and that’s not always going to feel comfortable. In fact, most of the time it’ll be uncomfortable. But it’s a sweet kind of pain, and I think you have to make peace with that sweet pain, and realize that’s actually sweeter than it is painful, you know what I mean?