15 ways to Invest in yourself 

1. Read books that you love

2. Talk to people – Find a mentor

3. Make friends

4. Travel Far

5. Take courses to build skills

6. Understand and how to actually health in your life

7. Sell something

8. Optimize your environment – be organised Time Management & Efficiency

9. Teach Something

10. Build a separate income stream that is not dependent on you

11. Clean up your image

12. Expose yourself to art and creative ideas regularly

13. Learn a new language

14. Better equipment & tools – increase the quality of your work , do your work faster

15. Practice introspection and stop saying yes to bullshit

Source – www.alux.com