Its 4am

It's 4am right now. I've just spent the entire night playing "call of duty" when i should've been doing some work or at least something else more constructive.
Playing games was supposed to take away the emptiness, lighten up my feelings and take away the stress. But it didn't help much. It's 4am and I can barely sleep.
I thought going out all day everyday would help, but it didn't either. Nor did eating cheesecakes 2 days in a row...
How can one be happy? Is there any shortcut? Happiness seems like a distant feeling now. Perhaps I am not capable of it.
A good friend told me it feels like dragging a huge rock along with you. but you gotta keep dragging and somehow someday the rock will be lifted and you'll see the light.
Would I do it all over again even if I knew it would be like that? Probably I would.
I guess life has its bottoms sometimes, and it can only move upwards from here right?
I hope....