Anxiety is a disorder, a feeling of worry, nervousness, or unease, typically about an imminent event or something with an uncertain outcome.

Here are 10 tips to help you with anxiety:

1. Take a timeout. Do some yoga or listen to some music. Relax.
2. Eat a well balanced meal. Do not skip any meals. If you are feeling hungry keep a healthy snack in your bag for later.
3. Limit your caffeine intake. When a person has to much caffeine it may change your emotional state.
4. Get more sleep. Going to school tired and stress is not so good for the brain.
5. Exercise. This will help you feel good and maintain your health.
6. Take deep breaths. Inhale and exhale slowly.
7. Don’t aim for perfection. No  one is perfect. Just try your best because perfection is not key.
8. Count to 10 Slowly. Repeat, and count to 20 if necessary.
9. Learn what triggers your anxiety. Why do you feel like you have anxiety? Is it just school? Is it work or family?
10. Maintain a positive attitude. Do not let negativity take control of your life. When you wake up in the morning motivate yourself. You are the best you.

There are plenty of sources for more information on anxiety, including here.