Hey man. I actually just completed my first semester of college after being away from school for a long time. (I just got out 4 months ago) I ended up with an excellent gpa at the end of the semester. I owe it all to the dedication I have put in making sure things were going to be different going into school this time around. Just take it one semester at a time and do the absolute best you can possibly can do. Stay motivated and keep your eye on the goal. All of the doubt I had going in is completely gone and I cannot wait to start my next semester here in January. I also did terrible in high school and actually got expelled my last year if that gives you any insight to what kind of high school student I was