Well my steps in their priorities in terms of effectiveness and helpfulness when I am feeling down. I do all of them or what is most readily available but in order is what I feel is most effective for myself.
1) Go out and get laid. If I am in a relationship. Go out and get laid...lol jk just seduce my gf, not much to it for me. Good relationship

2) Go out and Surf.
3) Spar with a friend. Jujitsu, boxing, Kick boxing, Muay Thai, etc etc...not that I am much good at any of them but is fun to do if you both have an okay idea of what you are doing. Relieves so much stress for some reason. Plus winning is a huge ego boost and you learn should have learned something if you lose.
4) Get immersed in a narrative. Book, Video Game, Movie, Anime Series, TV Series. etc etc. Does not matter, just something to transport me to another mindset or world.
5) Standard Exercise. I admit I dont do this often enough anymore. Not necessary for me yet by I feel myself slipping lol.
6) Kill [censored] in a Video game, CoD, Halo, Assassins Creed whatever. Feels good to be in control and in empowered even in a video game when you are feeling down.
7) Read non-fiction books. Especially History.
8) Talk to family. My family and only talk to each other sporadically when we are away. Yet we are all super close. Odd that, yet it works for us. Maybe a give some space thing? lol
9) Eat sugary food. I suppose that had to be somewhere in the list.
10) There is some other things that I do like, going out drinking and...rarely one other thing that involves bowls, pottery, combustion and a certain plant...though I usually am not ever doing these things specifically because I am down. More just want too.

Wow I really forgot music...yup lets call that like 3.5 or something. lol
And again I forgot Drawing, Poetry and freeflowing. Lets call that art and make it like 4.5.
Doh I also forgot socializing...geez no wonder I am rarely depressed or down...