Today is the day?

After spending fall break at home, I had a hard time coming back. I faced some of my problems going back (didn't solve, but better than nothing?) Monday was hard going to classes all day then working. I composed myself well and made myself think that it's only a with drawl. Tuesday was great no problems had a great mind set. I was determine to have another great day today. I woke up and things got bad. I was still in a positive mind set though. I was sitting in class and I got an encouraging text from a friend of mine. I was right if I thought positive than everything would be great. I was wrong, I got into a argument over something I had no control over what so ever. I was still determined to not let that affect me though, so I went for a run. I felt great after that then got to have a nerf gun war with friends. It was great! After I went and showered and took my roommate to the store with me. We got back and sat down and watched a movie with my R.A. Then I got a message on facebook and a text message that just turned my day around. I packed up my bags and decided to head home. I'm done here I can't do this. Thankfully I have one person here that is looking out for me. She drove to where I was and sat in my car and talked with me for a hour and so how convinced me to come back at least for the night. I don't know what is going to happen tomorrow, but I don't feel called here. There has to be a reason I'm here though right? I'm so confused and have lost almost all my faith so far. I give advice about Jesus all the time but don't take it myself. What do I do? Help!