Serious answers only. Does life have a purpose? ?

Let me explain my situation. I'm a 28 year old divorced single father. My mother has guardianship of my son but I (for the moment) have full custody. I do have mental issues (seeing and hearing things that aren't there, blacking out, as well as other symptoms that I won't bore you with here) and am living in a transitional housing for veterans. It just seems to me that everything is taken care of in my life and I have nothing to push me forward. Don't get me wrong I'm not going to commit suicide but I am nonetheless depressed. And I just saw my doctor yesterday and was feeling fine. So my question is this: what do I have to look forward too when I have no challenges in my life? Thank you for your time.