The universe has been getting on fine without your contribution; it will not notice when you stop pretending to make one.
The line is for the person who has mistaken presence for necessity and effort for consequence. You move through the day convinced that your small contributions are holding something together, that the meeting would collapse without your nod, that the group chat would wither without your commentary. It is a comforting fiction, and you have furnished it well. The universe, however, has been running quite successfully since long before you arrived and will continue doing so with the same indifference once you have gone. That is not a threat; it is an audit. Nobody is waiting for your masterpiece, because nobody has been informed that one is due. You are not the main character in a story that anyone else is reading. The sting is in the word pretending, because it names the performance you have been giving to an audience that left early. You call it dedication. You call it being indispensable. The rest of us call it a hobby with delusions of grandeur. The line lands best when you announce that you are overwhelmed, as though the universe had personally assigned you too much, or when you imply that things would fall apart without you. They would not. They have not. They will not. And that is the only reliable thing you have ever produced.