That tiredness after underpaid opportunities has a name. It's depletion interest, and it's why saying no becomes your quiet raise.

The thought behind it

Some things stay heavy because they have no name. This line supplies one, and the weight becomes something you can hold. Quiet Power is unglamorous by design: the version of you it builds is the only receipt you get. Everything hinges on “19”, which is the part a politer version of this sentence would have left out.