The passionate college runner dreams of making the Olympic team -- just to be on the team would be enough. The first-time Olympian dreams of standing on the podium -- bronze would be enough. The bronze medalist is upset he lost to silver by .1 sec. The silver medalist rages that he came so close -- so close! to having it all. The gold medalist wonders if he'll ever win gold again.
No one is ever satisfied. (fine, there are some exceptions -- I tip my hat to them).
All the advice below of quitting to do your own thing is (most likely) baloney. Down that path is just loss of wages and all the associated stress and opportunity costs. Again, there are exceptions, and congrats to them.
Here's my advice: You're doing great -- stop whining! I mean that in the friendliest way possible. This is what winning at life feels like. It doesn't feel like winning.