I need to write a book about myself/profile to be distributed to my target audience. In short is to sell myself and brand myself

Basically I want to brand myself . I was a CEO of 2 listed companies in both ASX and SGX. I also used to managed one of Singapore largest real estate company that has more than 8000 agents. Now that I’ve decided to retire from cooperate life, I would like to go back to my passion in selling real estate . However, my target audience are mainly the high net worth individuals and the C-suites .