Study in short bursts (20 mins to 1.5 hours) so your brain gets breathing room. Efficiency > hours.
Your brain needs sleep to solidify your study material.
Always have a starting point. If you don't have one, ask your friends or teacher.
If you focus on the total material, you'll get overwhelmed and procrastinate. Small steps at a time.
When you start studying, actually start studying. Avoid planning too much.
As a student, you are entitled to fun. If your daily life is enjoyable, you can focus better.
Food, water, and exercise maintain the brain and body. If you ignore that, you lose your processing power.