Tips
Stay curious and mindful!
Stay happy, as this is intrinsic not extrinsic!
Contribute to the society — be creative!
Keep bad influence away from you brain - television, advertisements, horror, depiction of violence, idiots!
Don't use (a)social media! — connect face to face with people and hug.
Don't use smartphones - use your brain, only one of them can be smart!
Eat smart - no processed food.
Walk!
Get Sunshine (no window glas to get UVB)
Get enough Sleep! - SWS not too much REM. Use light instead of an alarm clock.