I'm amazed that movies ever get finished at all - much less come out good once in a while. It's an awful lot of work and it can go wrong a thousand different ways.
A guitar is a very personal extension of the person playing it. You have to be emotionally and spiritually connected to your instrument. I'm very brutal on my instruments, but not all the time.
It is so common to write autobiographical fiction in which your own experience is thinly disguised.

