What do you do when everything becomes uninteresting.......?

I have a bunch of hobbies (Over 5 major) And i just seem to have lost interest in all of them.. I just want to do nothing all day. Im not depressed or anything. I have a few life decisions on my hand and there is just alot of pressure on me making them right now. One being to join the national guard or not. I dont get it because all of my hobbies are interesting i just dont feel that way towards them, maybe i am depressed but i do not know why. I dont really have anything to look forward too, except college if i can find something that interest me. Life is just extremely dull at this point.. What do you guys think