Seneca

Lucius Annaeus Seneca was a Roman Stoic philosopher, statesman, and dramatist. He served as advisor to Emperor Nero and wrote extensively on ethics, natural philosophy, and the art of living.

His Letters to Lucilius are a masterwork of practical philosophy, addressing how to deal with grief, anger, time management, and the fear of death. His Stoic writings emphasize that we cannot control external events, but we can control our responses to them.