I think once you had something that you like you always want that thing in your life. But what if you can't have that? What will you do?
It is life and if you have the same thing as you had in your past, you will never move on. The thing is if something moves and you are in it, you move too; it's basic. And our life is moving.
There was a past, and there is a present. You can't remain the same person you were before. Because each stage of life demands a new you. Somethings are there in life which you don't want to do but you have to do it otherwise you will be stuck in the same place.