It's also about shedding things that you're familiar with. You're now an adult, and that means you're supposed to be able to take care of yourself without the assistance of your parents. You have to clean up your own mess, and watch what you eat. You're now the principal person responsible for keeping yourself alive. So you have to try to get rid of things that you were able to do because someone else was taking care of you. Often times those are bad habits from when you were younger.

Though the danger there is that you could simply be trading one bad habit for another. I mean, why not grab fast food at midnight? You're an adult, you're free, you can do whatever you want as your heart desires. Binge watching shows while you have work the next morning? Sure! Buying stuff that you don't really need and maxing your credit card out constantly? Why not!