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While I am on, I can discipline myself to that extent. When I am off, I can't discipline myself at all. On the other hand, when I am off, there are so many things I like doing, it doesn't really matter.

Source: www.teachingbooks.net
While I am on, I can discipline myself to that extent. When I am off, I can't discipline myself at all. On the other hand, when I am off, there are so many things I like doing, it doesn't really matter.