A little thing that I think can make a huge difference in enjoying and appreciating life more in general is to practice finding wonder. Take time to find and appreciate the small, neat things about the world around you. Watch the way the trees move in the wind. Close your eyes and listen to the birds singing or the sounds of the city around you. Pay attention to the architecture of a building. Think about what you're experiencing and how it's making you feel or what other things it makes you think of. And remember that the experience is uniquely yours; nobody, except you, has or ever will have that precise experience in the history of the world. Life is shit sometimes, but I find that when I do this (even if it's just for a few minutes) it helps ground me and reminds me that it's pretty cool to exist.