기분을 전환하려고 OO를 했다. If you are the one doing the things to make yourself feel better. If you are telling someone to boost your mood: 기분 좋아지게 OO 해봐. 기분 좋아지게 노래 좀 해봐. 기분 좋아지게 춤 좀 춰 봐. -- but these are in imperative mood and sounds cheeky somewhat. You can say them to a close one. People say 분위기 a lot as well, that means general atmosphere, or air in the room where they're at. So, 분위기 좀 띄워봐. - Do something to up the vibe. . I would answer better if I knew the circumstances that you have in mind. Hope it helps

If you are the one doing the things to make yourself feel better, 기분을 전환하려고 OO를 했다.

내 기분좀 좋게 해봐.