We perpetually stand astraddle the threshold between the past and the future.
The past is important, but not nearly as important as the future.
The past is for reference, the future is for preference.
The past represents energy spent, the future represents energy potentials.
The past stores old memories/experiences, the future offers endless possibilities for new versions of both.
The past harbors a few regrets (or a lot), the future only the opportunity to reduce or avoid them.
The past is the haven of the powerful influences that shaped us, the future possesses our own acts of shaping.
The past was the vehicle of our previous learning, the future offers an expressway to new knowledge, skills, and ways of thinking.
Attention FORWARD! Full steam ahead (with just a few peeks over the shoulder).