On a personal level, I'll either write some music, occupy myself with something that will either reflect or take my thoughts away from something that's bothering me, read a book, do something that cheers other people up, listen to music, watch a video that makes me smile, or eat food. As strange as it may sound, most of the time I try to address what it is that's bothering me, whether it's directly or indirectly. If I'm stressed, feeling a bit down, or just having a bad day, I usually feel better after I've sort of gone over the situation an analytic way and figure out if there's something I can do to fix the situation. If I'm not able to do that, usually distractions or something calming seems to help. Whatever it is that makes you feel calm and happy, those things can usually help, even if it's the smallest bit.