"How do I get the work done?" By getting the work done. There is no better substitute for getting the work done than getting the work done. Finding the best chair, the best keyboard, the best text editor, the best caffeine vector, the best excuse this week for why you haven't gotten the work done, they all feel like getting the work done. But they aren't. You just have to get the work done.
Or, in the words of my father, standing over me as I procrastinated my homework, "Put the pencil, on the paper. Move your hand. Move your hand."