What Keeps You Going?

I'm 29 and already suffering. I don't really see how people live with MS for decades upon decades when I'm already tired of it. I can't even do the small things sometimes. I have given up multiple times and each time my boyfriend keeps giving me false hope for things that feel impossible. So now I'm asking all of you. Other people stuck in the same hell... What keeps you going? Because I genuinely need to know if there's a point if it's just gonna be with me for life.

I'm sorry if this is a bit dark. I am just really tired.