When starting a new project, don't be discouraged by how many great things have already been done. If you compare one of your new works with a finished masterpiece, you'll risk being immediately intimidated. Instead, be inspired by how shitty great things started out at first. 

Final Version. Then they would have played this from me, and I would have been fired from my cool job hanging out in the studio critiquing the Beatles. 

Check out an early version of the Beatle's Norwegian Wood. If I was around at the time, I would have told The Beatles to move onto something else.