Going through a breakup? Stressed about an upcoming exam? Just in a bad mood? We all have those days -- whether it's because of something difficult you're going through, or you're just feeling a little blue, nothing can seem to lift your spirits. But when you're down in the dumps, remembering those little things that make you smile can do wonders to boost your mood.
Click through the slideshow below for 12 of our favorite reasons to smile, and tell us: What little things can you always count on to brighten your mood? Share your thoughts in the comments or tweet @HuffPostTeen!