Why does Paige make a list of all the things she can do well?

Paige has been reading an article about postpartum depression and the fact that some women who suffer from this illness have been known to kill their babies. The article suggests that a new mother should write down all the things they can do well in order to fight the oppressive depression that sometimes comes with new motherhood. Paige writes out a list that revolves around her skills in dealing with Max, including the ability to dress him, to make his formula, and to change his diaper.