Elvis Presley created his own personal motto - TCB - which embodies Elvis's approach to life. It was his mantra.
TCB stands for "Taking Care of Business" and is accompanied by a lightning bolt Elvis drew himself. I first learned about this from Baz Luhrmann's 2022 bio-pic: the logo is in the credits and poster for the movie.
I wear a t-shirt bearing Elvis's logo when I go to the gym. I also just bought a pocket square bearing one for when I'm out on the town, dressed like a true boulevardier.
The sewn pocket square comes from Lansky Brothers ("Clothier To The King"), a Memphis company founded by a tailor who designed and made flashy clothes for Elvis before and after he became famous. Bernard Lansky was a mensch who helped many rock stars find their unique style. One day he observed a poor, unknown musician (Elvis) peering in the window of his shop. Bernard went outside and invited Elvis in. The rest is history!

