1. Reading: Reading is an excellent way to acquire new knowledge, expand your vocabulary, and improve your cognitive abilities.

2. Learning a new skill: Learning a new skill not only helps you gain new knowledge but also boosts your confidence and creativity.

3. Meditation: Meditation has been shown to improve cognitive function, memory, and concenration.

4. Exercise: Exercise enhances mental function. Regular exercise increases blood flow to the brain and releases endorphins, which help to reduce stress and improve mood.

5. Socializing: Engage in healthy discussions and debates to broaden your knowledge and perspective.

6. Writing: Try to make it a habit to write regularly, whether it's journaling, blogging, or even taking notes.

7. Trying new things:  Make it a habit to try new things regularly, whether it's trying a new food or traveling to a new place.