I don't have specific advice, as your particular causes may be very different than mine. I would however recomend the following books as good starting points:

"The Information Diet": http://www.informationdiet.com/

"Mindset": https://mindsetonline.com/thebook/buythebook/index.html

"Peak":: http://peakthebook.com/

"Deep Work": http://calnewport.com/books/deep-work/