I certainly haven't been able to overcome it. If I know I have more time than necessary to complete a task I will most likely put it off and find something else

I certainly haven't been able to overcome it. If I know I have more time than necessary to complete a task I will most likely put it off and find something else to do first. The workaround for me is to either work on things with unrealistically short deadlines that leave no room for procrastination, or to work on something extremely interesting (at the expense of the third category of important but not interesting or urgent).