What do you really want to do now? Do that! You are not too old, too set in your ways, or too anything else. If it is important to you, then find a way to do it. If you find that you really can’t do it, then do something that closely relates to it. If you find that you cannot do it as well as you might have if you had started earlier, then do it to the best of your ability now, and learn to be happy with that. Figure out what your dream is now, and do it!