I am fully aware of the awfulness in the world. I know millions of people suffer immensely every day, and I want to do my part to alleviate as much suffering as I can. However, I also know that me being miserable will not help anyone. Finding joy wherever you can is simply the best response to a crazy, unjust, and often times cruel world.
As far as depression goes, I hope my comment didn't come across as dismissive of real depression. That is a serious condition that cannot be fixed just by sheer will. It can, however, be dealt with, and I have many family members who are living testimants to that fact. It must be treated like any other serious health issue; I am in no way advocating ignoring your problems, I am saying make the best of it as you deal with them.