What keeps you going in life ?

When it seems like there is no point in life (if you never felt this way, no need to answer), what keeps you from holding on and having hope for life ? what motivates you to wake up
every morning, day, and do things ? Or do you just do what you do because there is no other choice.

For me, i go through ups and downs everyday, I run everyday to get positive feeling hormones released in my body, but my mood usually go downhill as the day progresses..i pop anti depressant pills too..but yeah…they drugs and exercise are important for me to hold on to this life4

and maybe one last thing is, i look at my life from a third person`s objective, this is a game i am playng, its going to be over anyways, lets see if anything interesting takes place, and how low or how high i can get before its all over..and try not to feel or think too much of anything