I have a theory that when writing software, you will do the best work only after you have written it for the third time. My hypothesis is that the first time you write it, you don’t really know what the problem is and therefore are just stumbling in the dark trying to find your way. The second time you now understand the problem domain but you haven’t worked out the best way to implement it yet. And then the third time you not only know the problem domain but understand the implementation constraints and therefore can create some of your best work.