Like, say I want to hike/climb some specific set of mountains. Great. What kinds of habits does a person who hikes all those mountains have? Well, they're probably someone who exercises every day. I can, as of today, become "someone who exercises every day, no matter what," if I set my requirement as "only one minute per day."
Habits grow on their own. I don't think it's really necessary to stage them. Once you see yourself as a certain kind of person, you just become that kind of person. And before you know it, since you're just like a person who hikes all those mountains, you end up being someone who has hiked all the mountains.
It's also the only effective way I've found to deal with my fear of success when it comes to big goals. I don't set them. I just decide to become the kind of person who would accomplish them, and by then, it doesn't feel like some impressive accomplishment. It just feels like a normal thing someone like me would do.