Gleeson made a name for himself in Game of Thrones after he starred as Prince Joffrey. He convinced so many people of his evil nature and intentions that he even received hate mail. It appeared as though he would become a future superstar but Gleeson shocked the world with his next decision.
He decided to retire from acting and spend his life pursuing his other interests. Gleeson studied at Trinity College Dublin because he had a major interest in academia. In the end, after six years, he gave up on that plan and went back to acting. The fans win because he is a brilliant performer (via The Things).