Naturally it is the sum of our inner forces which forces us to look back again and again, perhaps with too much of Anguish in the way, reminding us of what we have or have not been -for Anguish bears a semblance to Memory.
And this form of regret tries thru discourses to look for resources for you to overwhelm. So we must work hard towards this our goals, regardless of the hardships -that puts us at the helm, like a Captain of survival.
One should only look back to correct the course of their life in effect, not to kick themselves in the hind for every slack, but to try to err on the side of right.
Just remember, if our means have no end, then our end has no means, to keep obstinate blockades in the way of our impassioned & hopeful dreams.