About Negative visualization

Negative visualization or futurorum malorum præmeditatio is a method of meditative praxis or askēsis by visualization of the worst-case scenario(s). The method originated with the Cyreanic philosophers and was later adopted by Stoic philosophers. The technique was made popular with publications of Seneca the Younger's Epistulae Morales ad Lucilium. It is thought to have been one of the common forms of Stoic spiritual exercises.