Do not leave anything unfinished! I know, sometimes it is hard but if you fail to complete what you have already started then you would compromise the whole effort that was already put into your endeavor. Endless hours of creative energy wasted because there is the lack of little more to complete what was initially an invigorating idea. The end signifies the meaningfulness of all other parts, which require their own conclusion; it gives sense of wholeness and completion to the moments which preceded it. The end rewards you with the feeling of freedom to start something new, that, too, will be complete and meaningful.