People change at their own pace. I really believe that God made each of us for a purpose, and it is our job to figure that out, and do what we are meant to do. Not all people think this way. There are many people (I was once this person) whose main goal is to be happy. It's a great, and healthy goal if thought through deeply, because happiness can come from more than flitting from thing to thing thinking only about oneself. Happiness can come from serving God, from thinking about others, from being thoughtful, etc.
Life and life's lessons have a way of guiding our thoughts and decisions. We are all on a different path. HOpefully, we can all get on the right one...the one God intended for us.