Need Help Avoiding Relapse After School

Hey guys, I notice that after a long day of school, I'm always so exhausted and too tired to do anything, especially in terms of transmutation. I don't have a car to get to the gym until around 5:30, and school ends at around 2:30 for me. I'm the most tempted to relapse right after school. Even if I try doing other activities, it often ends up me relapsing around this time. Can someone please give me any tips or suggestions as to what I should do?