first, the usual:
- get more sleep
- cut sugar
- cut alcohol
- cut web surfing
second, some great ideas on how to manage time/tasks in these articles:
https://theweek.com/articles/444385/how-most-productive-pers...
http://calnewport.com/blog/2015/11/03/spend-more-time-managi...
http://calnewport.com/blog/2014/08/08/deep-habits-plan-your-...
https://www.scotthyoung.com/blog/2007/10/18/the-art-of-the-f...
http://calnewport.com/blog/2013/12/21/deep-habits-the-import...
third, read books (5 hours/wk is a good goal if bookrading not already in your schedule) -- make a book list and read actual books (if you're not already) - great fiction, science, philosophy, etc. and reread the ones that resonate with you.