For me: Time spent with my friends, and good music
Friends because I'll be sitting in the kitchen with my roommates and watching them carrying on or something and I'll realize, "These are the moments I live for. These are the moments I'm going to remember my life at"
Good music because music, for me, is like an anchor. There are albums in my life which defined moments in my life or help me to remember it by. Every time I hear a song from Disturbed's "Believe" album I think of my time in college. When I hear Korn I think of high school, when I hear Randy Travis or Garth Brooks I think about my country music kick when I was in elementary school. Sometimes I like to listen to video game music as it makes me think of the first time I played them, or of a time during my younger years back when things were so simple.
Sorry got side tracked.
To answer the question though: This was actually one of the sore spots of my depression. I used to think that because I enjoyed the things that I did (books, movies, video games, stories, etc) that I was somehow a defected or flunked human being because I didn't go out and party and do crazy stupid things or go on wild, unpredictable trips and shit like that. Apparently I "wasn't living".
And I take issue with that. I'm happy doing the things that I do, I take a great deal of pleasure in the things I like to do, so whose to say I'm not living? If I'm a happy, content individual with goals and I'm moving toward them then as far as I'm concerned,
I'm living life.
Now sure, my day to day things are really mundane but so what? That's just where my life is right now. I have no idea if 10 years from now I'll still have the same routine. I may be at a different location, I may be married and/or have kids, I might be really well off or horridly poor...I just don't know.
But I want to keep moving forward and so that's what I'm going to keep doing