If you want to get good at something, keep doing it. Practise. Rehearse. Employ much the same trick in a hundred different ways. Just keep refining the same basic technique. Eventually, you will become a master of it. Only, do please try to make sure it is a useful, constructive, skill. Don't, for example, become the world's greatest expert at throwing tantrums or annoying your neighbours. It is never too late to start developing the art of being wonderful. And you have already come a long way down that road.