One of the secrets of keeping any habit regular is not leaving it in the middle. Once you break that streak: It becomes tough coming back. So it is like your habit, and continuing it becomes like some karma point. Continuing it for Nth number of times, it becomes your nature.
No additional effort is required. Your brain starts doing it all by itself.
When I started writing every day six years back, first year was an absolute pain. I had procrastination hitting from all the corners. Now it is part of me, like eating and breathing.
We have to realize that things take time. We have to be stoic about it. We don’t have to break that streak.