Procrastination is the thief of time.
Meaning: If you keep putting off doing something, you will end up wasting time and not getting it done.
Choice of Words: Procrastination is the act of delaying or postponing something. Thief is a person who steals something. Time is the period during which something happens or exists. When you put them together, the sentence means that procrastination can waste your time and prevent you from doing what you need to do.
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