Years ago I watched a person on TV who was talking about motivation. He said “Sure you say you want to lose weight, quite smoking, etc but how big is your want to?”
He then went on to describe how we can say that we want to do all these things but if our “want to” is to small, change will never happen.
So the prerequisite to change is having a big enough reason to “Want to” do it.
One way that we can cultivate the desire to change is to make a pro/con list of reason for the change. Seeing it on paper is often all one needs to grow their “want to” into a “can do” and then a did.