Whatever you have experienced from your past your ongoing journey, try to share your experience, mistakes, learnings and spread awareness in your community as much as you can. You will be amazed to see how it can benefit the community from time to time.
You can spread your findings in any which way you are comfortable with:
1. Trying to bring topics on Health and fitness at least once in casual discussions with your friends and family.
2. Creating a blog and sharing all the information.
3. Creating online community on social networks.