Habits are more attractive to us when there are other people doing them. If a behavior is normal in a group of people, most likely we will start acting like them as well. It can have positive consequences if we join a group of people that have good habits, or it can have negative consequences if the people that surround us give in to bad habits.
Join a culture in which your desired behavior is natural, and you have something in common with the group.
For example, join a cycling group, reading club, etc. Your identity will change from “I’m a reader,” to, “We are readers.” This switch will build strong motivation and long-lasting habits.