Two items that seem to be getting brought up a lot in the coaching world recently are foul related. a. Getting to the line more, while b. Keeping your opponent off the line.
I saw in practices this past year more teaching put into "how not to foul, yet get your job done with a measure of physicalness. Players will hear "don't foul" and go soft, but anything can be more from the truth. Be physical without fouling is the key.
If you shoot 3 more free throws than your average and allow 2 less than your average defensively, you are a +5 and we all know what that means, especially in close games.