Procrastinate from the Latin crastinus, meaning of tomorrow. Crastination, a noun, now obsolete, to delay things until later.
The most famous procrastinator has to be Shakespeare's: Hamlet.
Even though Hamlet believes in the vengeance of his father's death by executing Claudius, he is afraid that the void that would be left would inevitably lead to a mutual closeness between him and his mother. The fear of such an occurrence leads Hamlet to procrastinate the death of Claudius through self deception.