This is a tough question. What is important to you and me can be quite different. You have to first know what important things in your life have to remain a priority no matter what. Once you know what those things are then you're going to be just fine. I was a single mom of 4 children when I went to nursing school. I also worked part time. It was so hard, but I was able to do it. If I can do it, anyone can.
As I'm sure you can imagine, my kids were my number one priority and that never changed. I had to make everything fit around my kids and their needs. Many times that meant staying up until late to study because I wouldn't study while they were still awake. Remember to strive for balance. If all you do is study you will be very stressed and burned out. If all you do is hang out with friends then your grades will suffer. Remember what you're working towards and don't ignore your needs. Good luck!