I think composing can take a lot out of you...
I've fallen into the trap of never taking any breaks. Initially this is fine as one's enthusiasm can give you a lot of enegy, but it's not sustainable for long periods, so now I find it harder to force myself to sit at the keyboard.
I procrastinate with the work and then it stretches out over 7 days. I've not had a holiday for 2 and a half years and I 'work' almost every weekend. Craziness huh? Even if I only get an hours worth of writing done in a day, the guilt and pressure connected to the amount of work I know I should have completed means I'm mentally worn out - especially after this routine continuing long periods of time.
Working at home is isolating. Morning flirtations with the Polish girl in Starbucks keeps me sane.
I've stopped listening to music. Which is bizarre really seeing I wanted to write music because of my love of it.
I always got a huge buzz out of writing, or trying to write my own little songs (For work I write purely for tv docs and the like). Now I've completely stopped writing music for my own pleasure. It's been over a year since I wrote something 'personal'
As Jhorsley said - client revisions can be a nightmare. Or just clients in general. For example a jobs starts with - 'can you make it sound like Solaris?' and 8 weeks into the edit the series producer says 'can you make it sound like 'The XX'
So you want Solaris or the XX?? Its fair enough really - opinions change as the process goes on, but when you are feeling weary and the budget is small it's hard to deal with!
Anyway that's my rant done with!
It's not all bad and most of these complaints are my own fault or changeable, so I now have a masterplan for a happier composing life - take weekends off, take long breaks, feel the love of music again, write some more of my own crappy songs, try and find a studio outside of my own home etc..
I've yet to impliment these but at least there's hope