Measure your life in decades
If you had suggested this to me even two years ago, I would have scoffed at the idea. My ambitions had short time horizons. I tried (often in vain) to push myself through some sort of self-constructed urgency.
But the thing is, the best stuff takes time. By definition it has to. We aren't proud of things that come easily to us, we're proud of the things that were hard, the things that we fought for.
Fighting takes time.
Don't minimize the value of today, but recognize that while we often overestimate what we can accomplish in a day, or even a year... we severely underestimate what we can accomplish in a decade.