I think you are doing the right thing in seeking help. Also working out or excersizing is a fantastic way to get your body responding in a very positive way with your brain, and vice versa. I second everyone's opinion on this.
About 4 years ago I was in extreme financial hardship, and I was working very long hours in the car business trying to support my very young family. I began to notice a change in myself that I would have increadible mood swings in very brief periods throughout the day. Having worked in a mental hospital years ago, I started to become concerned that I was heading for an emotional breakdown or I was becoming manic depressive to some extent. A lot of what I was feeling was due to exhaustion. Well, a lot of prayer later, improvements in the job, and some exersize, I was feeling much better about everything.
This year, I entered a new job and am progressing steadily (upward, heh) in, I'm working out using the Body For Life methods Bill Philips talks about in his book. My wife bought me the book about four months ago and I have to say it completely changed my perspective on working out, eating, and exercize. I highly recommend it.
Just a bit of advice: Don't ever be intimidated by the 'big' guns around the gym! Who the heck cares about how much you can lift, when every person must start at ground zero anyway? Just remember that. What do most of those guys know about engineering? Nothing! You are a 'big gun' to them in your own world, so don't ever sweat someone else's abilities over your own. Besides, physical ability, like strength, can be obtained through working out with weights, etc. I started lifting again this past February after being off weights since the end of the 1980's when I used to lift in college. I began using the Body For Life method and have made increadible gains in both size and strength. My bench press went from a straining 135 lb max to 255 lb max(?) strong & controlled in only 8 months. I look and FEEL much better then I ever did. Read Bill Philip's book and you'll be amazed at his insight.
I wish you the very very best in overcoming your struggles in life. Hang in there!
Davy