I'm 21 and lately I've been having a hard time staying in the present moment. This past year, especially around when my relationship ended back in April, I've been feeling very depressed and unmotivated. I often catch myself reminiscing on past relationships, old friends I haven't seen in years, high school (pathetic, I know) etc.

Life has become very routine and boring. A lot of my friends have moved away (college) and I only have a couple bro's left around town that I occasionally hang out with. My last relationship ended on pretty bad terms which has had me feeling down up to this point. I'm the one that broke up with her, and I had my reasons (a lot of red flags), but it was still a tough on me mentally. I feel a lot of loneliness and depression and try to cover it up by avoiding it with long work hours and trying to focus on school.

I'm kicking myself as I haven't lifted in months and I picked up smoking again. I yearn for the days when I was once somewhat happy and had a decent social/love life. As a young guy, I absolutely do not want to waste my younger years remeniscing and sulking in my sadness.

For any of you guys who may have experienced something similar, how do I get out of this rut? Thanks.