I know how you're feeling Jaz. I got my 38+ hour a week job, then I DJ Thurs, Fri and Sat night on top of that(12-16hrs over 3 nights). Every couple of weeks I hit a bit of a flat spot that can last for a few days or maybe weeks, but than I have a good night or find some new music and its sparks my interest again. Also take a weekend off here and there and just relax or chill with mates and try not to go clubbing, I found I was taking a weekend off but would still end up in the club with mates even when I wasn't working.