to do or not to do..

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I actually have a lot of documenting to do right now, but somehow I am so not into doing those stuff. Sometimes (especially today)I tend to be such a procrastinator. It has been a habit of mine. Although this is the case, I make sure I can still keep up with my duties and responsibilities that is by means of cramming. So my question is, do any of you guys procrastinate? What are the negative effects,if there are any, of having such a habit?