Man... I remember when I had to write a boast about myself for my English class and it literally gave me an existential crisis because I couldn't come up with five good things about myself. I asked my online friends for help with filling it out but I had a panic attack and broke down in tears while trying to present it...
PS: A "professional summary" or "skills section" would be a closer translation since personal brand has more of an entertainer/artist connotation, while PR applies more to celebrities and businesses.