In the lovely book called Discourses by Shri Gondavalekar Maharaj, there are innumerable outstanding nuggets of wisdom.
One of them asks us to focus on the present, which we know. And not worry about the past or future, which also we know.
As a corollary, what he says (paraphrased) is, “On a daily basis, what are you using the prapancha (sense objects) for? If prapancha are being used simply to gain happiness, then clearly that happiness will never last. So what to do then? Use the prapancha as a playground to simply perform your duty. Then see the magic unfolding.”