6 sunshine mentality advocated by Yale University:

1. Be unconditionally confident, even when you make a mistake.

2. Don’t think too much and eliminate negative thoughts regularly.

3. Learn to forget the pain and make room for sunny memories.

4. Dare to try and be embarrassed.

5. Every day is new, and troubles and pains never last overnight.

6. Praise from the bottom of your heart when facing the excellence of others.