Physics. It's challenging, but fulfilling. Over the past year I've had to sacrifice going out and partying for studying and doing homework. Sometimes it's stressful, like right now I'm 3 chapters behind in my computational physics class, and so is everyone else in the class, even though we'll all be in the library until midnight sometimes. But I made the conscious decision to study such an intensive major, so I'm okay with it. Plus, I mean, there's only so many times you can get blackout wasted at some random person's house with a bunch of people you don't know before it starts getting a little old. At least for me.