http://www.nacacnet.org/studentinfo/articles/pages/senioritis.aspx
This website has some great tips on how to prevent senioritis.
1) Plan Ahead- Make sure you always put school work first.
2) Don't Obsess- Obsessing causes stress and pushes away other things. Keep a balanced mind.
3)Talk About It- Talking about your problems calms the nerves and reboots your brain to focus mode.
4) Have Fun- Senior year is your last year before you have to grow up. Keep it G and go beast mode.