For a while, this piece has been my mantra at the beginning of a guitar session, in order to, yes indeed, keep the thought and frustration of giving up the guitar at bay. Apparently, there are phases in your existence that thoughts like this are creeping up.
An introducing theme with variation develops into a ballad-like section with a powerful emotion as conclusion. The last section returns to tranquillity with a reprise of the first theme. The emotional phrase is the perfect opportunity to play with power and contrast.