i don't have book suggestions, but a few thoughts:<p>first, the usual:<p>- get more sleep<p>- cut sugar<p>- cut alcohol<p>- cut web surfing<p>second, some great ideas on how to manage time/tasks in these articles:<p><a href="https://theweek.com/articles/444385/how-most-productive-person-office--still-home-by-530-pm" rel="nofollow">https://theweek.com/articles/444385/how-most-productive-pers...</a><p><a href="http://calnewport.com/blog/2015/11/03/spend-more-time-managing-your-time/" rel="nofollow">http://calnewport.com/blog/2015/11/03/spend-more-time-managi...</a><p><a href="http://calnewport.com/blog/2014/08/08/deep-habits-plan-your-week-in-advance/" rel="nofollow">http://calnewport.com/blog/2014/08/08/deep-habits-plan-your-...</a><p><a href="https://www.scotthyoung.com/blog/2007/10/18/the-art-of-the-finish-how-to-go-from-busy-to-accomplished/" rel="nofollow">https://www.scotthyoung.com/blog/2007/10/18/the-art-of-the-f...</a><p><a href="http://calnewport.com/blog/2013/12/21/deep-habits-the-importance-of-planning-every-minute-of-your-work-day/" rel="nofollow">http://calnewport.com/blog/2013/12/21/deep-habits-the-import...</a><p>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.