'Too late' is the worst of all regrets. I mean, in fact, 'too late' means that now there is a different approach to what has been. Ergo, now I would do thinks differently. Wrong. What's done is done.
Obviously, if it's meant to be done, it's there and then. Later considerations only make you a weakling. The time is not then, nor is it tomorrow. Deal with it. Live in the now. That is freedom, the rest is memories, or, if you will, whatever the future might bring.
What's really important: don't dwell in the past. Ever. Don't live in the future either. This is old news, however, but always good to be remembered as a note to self.