Not working out = Bad mood

I know I can't be the only one who is addicted to working out! I work Full time and I go to school full time and I have a full time boyfriend. At least my boyfriend enjoys working out sometimes. So it is hard to fit in a workout, but let me say that it does take priority. I have these terrible mood swings when I can not work out. There seems to be some kind of chemical imbalance because if i don't work out, I get irritated fast, bitchy, moody and depressed. I have even been known to throw a tantrum when something comes up and takes away the only time I had to workout. I have probably worked out for the last three months with maybe 5 days off. I know it is terrible for your body and I am paying for it right now, as I am completely exhausted but insist on racing home after work today and getting in 40 minutes of cardio before I race out the door to class.

My boyfriend says I am obsessed with working out, and I tend to agree. But my life is so busy these days, that I am very stressed and hardly have time for myself, so I think I crave the workouts as my release. I am afraid however that I crave it too much and I am growing dependent on that chemical release to stay balanced. How do I combat my stress and allow myself a break from the workouts? Is it truly bad to be so dependent on the chemical release, is there a health risk?