Where there is much pretension, much has been borrowed; nature never pretends.

Anything you actually own you can be casual about. Pretension is the strain of holding up something acquired for the occasion: the accent, the reference, the confidence that has to be topped up. A thing that grew in you needs no maintenance, which is why genuine skill and genuine background both look relaxed from the outside.

Find the one area where you are still keeping up an appearance and ask what it would cost to drop it. Try being plainly yourself in that setting once, and see whether anyone notices the absence of the performance.