Start with the small things, look at your room, what does that look like? Is it clean and organized, or dirty and messy?
Look at your body; is it in shape? Is it healthy? Is it clean?
How about your relationships?
How about your workplace?
Are you studying enough at school?
Do the unsexy, essential thing, what which is hard, what which is unpopular.
Forget about changing the world; no one can do that individually. Your best bet is to try to change your own life circumstances. Focus on the moment and remember Momento Mori.