*Don't hate your job*
Let's play a game of pretend. My name is John and I hate my job. I wake up at 6am and I dread going to work. I eat my breakfast, take my shower, and brush my teeth while simultaneously wishing that I could catch strep throat so I would have a valid reason to stay home. I get in my car and spend an hour in rush hour traffic wishing that a semi-truck would t-bone my SUV so I can call off. I get to work and spend 4 hours staring at the clock willing it to be lunch time. When noon finally arrives, I breathe a sigh of relief then start dreading the end of my lunch hour. By 5pm I'm so exhausted from my long day of loathing that I don't have the energy to be grateful that I'm finally going home. As soon as I walk in the door to my house I start dreading work the next day. Yes, John's life sucks, but here's the secret. This is pretty much everyone's life. So leave your work at work. Every hour you spend dreading going to work is another hour you're miserable. You are working to finance your playing, so try to enjoy every leisure moment available to you. If you expended as much effort trying to LIKE your job as you do hating it, it would be like going to the circus everyday.
No one likes listening to others whine. I would go even further with this. Not only should you not complain to others, you should also stop complaining to yourself. It is difficult to be pleasant company while you're annoyed. No one ever died wishing they'd spent more time bitching.