This is funny, but also comes from real life, my son didn't want to start using new shoes.

Your old ways of thinking are like the old pair of shoes in your closet. You’ve broken them in and they feel right. Even though they have holes in the bottoms and do not do a good job of protecting and helping you, you put them on instead of the new pair of shoes lying next to them. You’ll wear the old shoes in the rain and get wet. The new shoes have to be broken in and at first are uncomfortable, so you go with what you know. Let’s not only break in those new shoes; let’s get rid of that old pair once and for all.