Recommend a great parenting book, please.

JourneyToBaby

I have two boys, one is easy going and generally an "easy kid", the other is a limit tester and gives me a run for my money on the daily.  

One of my goals this year is to up my game in the parenting dept.  I am working on the obvious... staying consistent, making sure they have enough sleep, a healthy diet, limit screen time (tv video games), and get a good amount of exercise.  I also want to read some parenting books, specifically on healthy ways to deal with my more spirited and limit testing son who has been known to have notes sent home from school letting me know that he had a "difficult day because he was not listening and following directions".

Any great parenting/discipline book you can recommend would be very much appreciated!

NotSharknado

I just tell them to act right.