To create a new habit...
You Need a Habit Tracker
The concept is simple: Mark off every time you perform your habit. Over time, it builds up to a new identity, and a permanent habit. Go out for a run enough times, and you're a runner.
A habit tracker is not going to do the work for you. It's just a tool. But the right tracker used the right way is powerful.
There are lots of habit trackers out there, and they share some common pitfalls