One of the greatest realizations I've had is that there really is no other time than the present. The future never is, neither the past, it's only the present. So, if all we have and can interact with time-wise is the present moment, then everything you can actually do can only be done at each particular now.
So, if you want to learn French, or Lisp, or riding a dirt bike, you can only ever actually do it, at some particular now. The trick then is to try and make sure somehow that for each particular now, you always have a clear idea of what it is that you should be doing. Otherwise you risk falling into the procrastination trap that can last as long as ones lifetime, as the article brilliantly demonstrates.