make all the difference (in the world)

make all the difference (in the world)

To create a very noticeable effect, especially a vast improvement. A fresh coat of paint has made all the difference for that old house. A good night's sleep, proper meals, and a bit of exercise can make all the difference in the world to your outlook on life.
See also: all, difference, make

make all the ˈdifference (to somebody/something)

have an important effect on somebody/something; make somebody feel better: A few kind words at the right time make all the difference if you’re upset.
See also: all, difference, make