Can you Relate? Doing whats best for your future but not the present....

I am having a hard time lately. I'm a productive person I'm studying electrical engineering (currently a junior) and have an internship. The weight of my responsibilities have been coming down on me. Not to mention that my personal life, or lack there of is nonexistent. I used to have a social life but school and work make it hard to have one. The person that I have a crush on blows me off. Basically I feel I'm doing all the right things for my future, but my present is bland. I try not to feel bad because there are worse off people than me, but it's hard to keep my head up some times. I have felt down for a long time now (I'm 21) sense around 15. I don't seek medication for depression/anxiety because I have learned to deal with most of my feelings. Most of the time I keep my head up, but sometimes the glass half full mind set is hard to keep up. Do you know this feel?