Did you 'keep you life FROM being monotonous?" or did you mean "what activities keep your life monotonous?" I'll answer both anyways:) Okay, things that keep the average person's life monotonous would be things such as work or school. Even someone who is a NEET will find monotony in trying to survive everyday. And what activities keep your life from being monotonous? As a general rule, there are none. Like, if you try to do something new everyday, the new things will get monotonous. I mean you can get variety, but it's hard. If you want more on that, Orihara explains it really well in Durarara!! So look that scene up if you want a better explanation:) Hope this helps... and doesn't catapult you into depression:P
