im new and need some help!!

I’m not sure what my problem is with procrastination, but its there and getting worse every day. I’m still in school and my marks this year have dropped at least a letter grade. I’m not sure what to do. I mean I try to do well and focus, but its hard. Procrastinating is probably the worst of it all. I never do my homework at home. Instead I wait until the last possible instance that I can do it. I don’t suggest doing this. Its seems as though my problem is with starting or finishing. It never seems to be the same reason why it doesn’t get done. I either start off the project with a blast, but then I get distracted and never finish, or I don’t start at all. Throughout grade school, my teachers tried to encourage me to stop procrastinating, but I never could. Time after time again I would be stressed to finish, or I will hand in something that I knew I could do better on. Another reason why I think I procrastinate is because I never know what the homework is. My friends have helped me with this, but I don’t know what I would do without them. The also help me to keep working and stop procrastinating by keeping me on track, but I’m not sure what I’ll do when they are gone. That was a lot, and since I hate reading things this long, here’s a one sentence summary.