The sadness always seems to last longer than the happiness

Sometimes things are never ending.  Even when you know that you shouldn't act on whatever it is anymore.  If something is bad for you, you know in your heart that you should stop.  But you don't.  You continue to tread the viscous cycle, hurting yourself more and more every time.  And then it gets to the point that you can't even blame anyone else for it anymore.  Because it's you.  You're the one that should regulate what you're doing.  Not others.  But instead, you feed your addiction.  Until...

you're pretty much dead.