You know...at first I had no intention of replying to this, but what you have said has been stuck in my head for a while now. It upsets me to know that you are struggling. Maybe I'm too sensitive, I don't know.
Anyway, I think it upsets me because, I have been in your shoes for a long time now. And you know what? Most of us here struggle with a situation similar to yours, I'd bet good money on that. Don't feel alone, okay? We're the audio portal 'community' for a reason. Also, going to bed as distraught as that every night is unhealthy; please talk to someone! I don't mean to sound sappy or some nonsense like that, but if you need to talk to someone, you can PM me, alright? Heck, for that matter, if anyone wants to PM me and chat about life then go for it, I always have time to lend an ear (or my eyes, as I'm reading???)! :)
Now, onto business. I completely agree with what everyone is saying. Life is rough, and doing what you love can mean having to walk a long and difficult (and sometimes fruitless) path.You have to make sacrifices sometimes...but I want you to remember this:
Life is a journey, not a destination.
The same goes for music. A part of that journey, as many others have already mentioned, happens to be developing your musical skills, meeting new people (networking; this is a HUGE boon in any professional situation), taking the time to listen to what others have to say about your music, research/study/learn theory, practice when you can, etc. Sacrifices are almost a given though. One of the biggest sacrifices you may have to make is working a job that you don't particularly like, for YEARS, no less. I've had 5 different contract jobs, that I've disliked, in the past 2 years alone. I have changed my own mind about music a million times over, and it seems that I am shifting my priorities towards something more stable for now.
What I would recommend, and please stick with me here, is to find something that you can tolerate that allows you to live comfortably. You can then work on your music on the side! It's a tricky game, and a roll of the dice from time to time...but you know what? If you're passionate about something (and not just music), you'll make it work. The successful composers, producers, artists, whatever (people in general), are the people who buckle down and say you know what life? Fuck you, I'm gonna work my ass off and I'm GOING to make it. My apologies for the harsh language. Anyway, be as determined as you can be - and go from there. It's hard sometimes, I know that. We're all in this together though, in one form or another.
The life of music is a dream, it's true! You have to want it, you have to breathe it. Just don't become disillusioned by the ebb and flow of it all. Understand that even with all of the hard work, and skill and networking, sometimes the dice just don't play. Whatever the case may be, sometimes it just doesn't pan out. There are other dreams to be had though, remember this as well. Don't be afraid to experiment with new things and news ways of life.
ANYWAY...I feel like taking a giant red pen to this monologue that I've written here because it reads like some half-fried inspirational speech hahaha! I know this is a pretty bittersweet post, and I apologize for my endless rambling on life, but keep your chin up!