100 is a number.

Every time you make a choice you are turning the central part of you, the part of you that chooses, into something a little different from what it was before. And taking your life as a whole, with all your innumerable choices, all your life long you are slowing turning this central thing either into a heavenly creature or into a hellish creature.

C.S. Lewis, Mere Christianity.

It begins with a grumbling mood, and yourself still distinct from it: perhaps criticizing it. And yourself, in a dark hour, may will that mood, embrace it. You can repent and come out of it again. But there may come a day when you can do that no longer. Then there will be no you left to criticize the mood, nor even to enjoy it, but just the grumble itself going on forever like a machine.

C.S. Lewis, The Great Divorce.

Finality must come sometime.

C.S. Lewis, The Problem of Pain.