Third, it's OK to be mistaken. It's good to keep one's mind open while pursuing an idea. The idea may metamorphose into its opposite as the result of one's efforts. But let's return to repetition and practice. Why, there's a great deal of them, of course.
Repetition is a life line of computational mathematics.
Iterative processes serve as one example. Given a number and a set of rules to be performed that result in another number. Apply the rules to the new number and get a third one, and so on. Iterations may apply to a group of numbers or other mathematical objects. See, for example, the Candy game and Integer Iterations on a Circle .