INCREMENTALITY
The belief or mindset that anything can be accomplished if you tackle it one small step at a time. The frame of mind that is the opposite of "all or nothing" thinking. Phrases a person with a positive incrementality might use include "baby steps", "How do you eat an elephant? One bite at a time", and "start small and build." "Slow and steady wins the race" is the motto of the person who possesses incrementality. This is the tortoise, not the hare.
Start small; develop incrementality!

Her incrementality helped her to make major lifestyle changes one baby step at a time.