I'm 32 and I've been feeling like this often. My solution has been to take some sleeping pills at a decent time when I've had a horrid day and wake up early and start a new fresh day. Try and be productive, clean something, run errands, play with my cat, but who am I kidding?? I tend to lay in my bed for a few hours first. I know this will pass, just like everything else that was traumatic happening in life. I just think about my mom and her passing and how things have changed, I've coped, I can finally feel true happiness again that I thought was never going to happen at the time she died. it just sucks getting through it... and I don't know your past, but just know there's no constant in life and be patient. You will eventually feel happiness again.