Have you heard of Wim Hof? 

It’s actually someone’s name!  He’s a Dutch endurance athlete who made a name for himself by pushing the limits of physical endurance.  He has developed a system of breathing and cold water immersion that can do wonders

Have you heard of the book “The Miracle Morning” by Hal Elrod?
It’s an easy read and essentially he suggests having a morning routine. Something that you do every morning, that no matter how bad your day goes you can look back on and be proud of what you did.