The Duke of Sussex will discuss living with loss and personal healing during a live streamed event.
The event will take place on March 4th, and tickets cost £17 plus a £2.12 fee for UK customers.
Each ticket includes a copy of Spare, the fastest-selling non-fiction book in the UK since records began following its January release.
The Duke will be speaking with Dr Gabor Mate, author of The Myth of Normal: Trauma, Illness & Healing in a Toxic Culture.
Diana, Princess of Wales, the Duke's late mother, is his "guardian angel" who is with him "all the time" in the novel.
The Duke's frustrations with his family are laid bare in his autobiography, including claims that his father, now the King, put his own interests above Harry's and was jealous of Meghan and the Princess of Wales.
After calling the Duchess of Sussex "difficult," "rude," and "abrasive," the Duke said his brother William, now the Prince of Wales, knocked him down.
Meghan and Harry have also discussed Meghan's summer 2020 miscarriage.
It is unclear whether the Duke will be invited to attend his father's coronation in May