Answer: Powerful thing; everyone
Explanation: Repetition simply refers to process whereby a word or phrase is being constantly reused or repeated usually within a short period of time. The process of Repetition is usually very useful and powerful in mastering and aiding the establishment of certain information or data in memory. Repetition also occurs in the day to day or regular performance or engagement of chores or routine, whereby one becomes attached or vast in the task, such is the power of Repetition and it is applicable to everyone.