Practice what you want to be good at. Such a simple concept. When you understand that you will achieve mastery at everything you practice, including all those not so useful habits, the motto takes on new meaning. Do you want to be good at being a skeevy weasel? Well, by all means, continue being sly and devious and one day you will get there, my friend. If you just want to be a good typist, it seems as though you are on the right track. Well done.