Honestly, the world has always been a terrible place and sadly that isn't changing anytime soon. It's overbearing when you consider yourself against the world, but remember that you are only one.
As you are one, look out for yourself, do what you want to do, live in the moment if that makes you feel better. People put nasty labels on things like selfishness, hedonism and nihilism, but if your ego is weak you'll just be at the world's mercy. Fuck the world. The world starts with you, as only you can see through your own eyes. You only get one life, so don't be afraid to be selfish. Before you can help others, and the world, you need to help yourself first and be uninhibitedly you. You are your own persona.
If you can't change the world, make the world your own. Find your own meaning in life and live for that. Heroes don't exist, only egos. And your ego is especially unique to you.
Life is only what you make it in the end, so don't chain yourself. Be you.