I hate to suggest this but maybe you should drag him kicking and screaming to a therapist. When I had just graduated from HS I did not know what I wanted to do with my life. I had collage but only lasted about 2 years. I fell into a bit of a funk. Did not know what it was at the time.

My parental units made me go see a Shrink. Who made a deal with me. If I would attend a 24 hour group session. And after that I did not want to continue I would not have to.
I toke the deal. I kind of hung back and observed. Like Jane Godel with the Gorillas.

Not to break bad on them but I came to realize that they were a bunch of winy crying losers. And that they should get over them selves. I told the Doctor that and he came to a decision that I was not in crisis as he called it and showed me the door.

What I am trying to point out is that some times you have to see some one that is in real pain to understand that you are not as bad off as you may think you are.

Also If your BF is in real depression the doctor could intervene and avert a tragedy.

I am not saying that your BF is a winy looser. Just that is what I saw when I looked at people crying about there jobs or the direction there lifes were going. Keep in mind I was only 17 at the time.

Get some help. It may be to much for you to handle by your self.