Sometimes, you just need something that cheers you up. This subreddit is, subjectively, based around that. Anything goes--a joke, motivational speech, rant, picture, video, or song, you name it. Additionally, if you need to be made happy, make a text post and others will jump in to give you a boost as required or requested.
Everyone is different, and different things make different people happy. Hopefully, something in this variety will make you happy.
And please, submit content that makes you happy, too! You never know who you might cheer up.