Allow opportunities so they won't become missed opportunities.

What was on the other side?"
Donna said, "He said there was another world on the other side. He could see it."
"He... never went through it?"
"That’s why he kicked the shit out of everything in his apartment; he never thought of going through it, he just admired the doorway and then later he couldn’t see it at all and it was too late. It opened for him a few days and then it was closed and gone forever.

Our lives are defined by opportunities, even the ones we miss.

We missed too many opportunities. We didn't convert.

Don’t live in regret over missed opportunities, for if you do, you will miss even more.

And my mother, whose radius of travel was short, tied the letters with ribbon and kept them in her desk, When you get the chance, she said to me, "go.