The Door in the Wall by H.G. Wells is a poignant reminder to not let opportunities slip by. If you ever felt the universe presented you a gift that you ignored because you were too busy, too willful or generally too full of your self to accept, you will relate to this short masterpiece.
Thrice I have had my chance–thrice! If ever that door offers itself to me again, I swore, I will go in out of this dust and heat, out of this dry glitter of vanity, out of these toilsome futilities. I will go and never return. This time I will stay . . . . . I swore it and when the time came– I didn’t go.