There’s waiting on the couch and waiting while you prepare. Only one of them gets you ready.

The same period of time can leave you in two entirely different positions depending on what happens inside it. Both look like waiting. Only one of them changes what you are capable of when the wait ends, and the difference is invisible until the moment it matters, at which point it is far too late to add.

Name the thing you are waiting on, then name one capability you would need if it arrived tomorrow. Spend an hour on that this week. The waiting is going to happen either way, so the only question is what it costs or builds.