I suspect there're other factors to forming habits. Forming a running habit is probably harder than say heroin. I also recall from the "atomic habits" book, t

I suspect there're other factors to forming habits. Forming a running habit is probably harder than say heroin. I also recall from the "atomic habits" book, that you can chain habits together. The idea was that if you already have a habit of getting out of bed in the morning, you could hydrate. Just say "as soon as I get out of bed, drink a glass of water" and it is easier to form the habit.