I don't understand why people's partners don't like to cuddle them when you're feeling down? What's up with that? (I mean if you're being crabby & nasty to the other person, fair enough, but otherwise?)
It's probably sickening to some, but my hubby & I are all about the cuddles.
Being outdoors & hopefully in the sunshine lifts my mood a lot!
Also, I'm going for a pedicure this afternoon. 
My DB and I are the same, all about BIG hugs and cuddles on the sofa when I'm sad, even if I've gotten a bit stressed with him, he just hugs it out of me as he knows it's the stress talking, not me.
Music is a huge thing for me, I listen to music pretty much 12 hours a day, when I'm commuting, on the way to work, whilst at my desk

If I'm super sad and it's a rainy day, a cup of tea from my masive Rose planetarium mug (reminds me of 1.NYC and 2.being in a lab, I miss lab work :/) and I start putting records on. Nothing like the sound of vinyl to cheer me up.