I sometimes think about dying. But not in the suicidal way. I wonder what it’ll be like in the end; will I die in a fiery, explosive exit, or will I wither away from disease or old age? Will I leave life fully spent, having given away everything I can?

If life is a mountain, I’m on the climb: I’m enjoying my career, I started a new company, I love the life that me and my wife share (and our travel wish list continues to grow).

But I sometimes wonder what the downhill will be like. Is there an age when I’ll look at a problem or an opportunity and think, no thanks, I’m too old for that? Will there be a day when I decide not to learn something new because I can see the end ahead of me, and maybe I don’t feel like it’s worth my time? Will I choose to make my way down the mountain and retire quietly, having never reached the summit?

I hope not.

But then I remember that this mountain’s peak is as tall as I want it to be. I can keep climbing. Maybe the summit could reveal a new, taller mountain. But in the end, I can choose to keep going. I can choose to keep learning and setting new goals. When I’m 80, I can decide to write that next book or song, and maybe it’ll be my best.

Consider the story of a woman named Audrey Crabtree. At age 99, she finally received her high school diploma, 80 years after leaving school one credit shy of graduation. There’s a very cynical part of me that thinks, “but why bother?”, but I realize that people like Audrey, no matter their age, are climbers. Audrey’s early life regret turned into an opportunity to plant her flag late in life, and she didn’t turn to head back downhill and abandon her dream.

Be like Audrey. There’s a mountain ahead of you, so climb. Also, don’t look down.