…………………..YSL was drafted into the French army, and had a nervous breakdown! He was in a hospital for quite some time. The owners of Dior fired him and hired Bohan to take over. St Laurent was devastated, but his best friend and lover at the time, Pierre Berge convinced him to start his own company and history was made……Bohan designed lovely commercial things, and lasted at Dior for quite a few years.
Something good almost always happens as a result of something bad.
At the time, getting fired from Dior probably seemed like the end of the world for YSL but it turned out to be probably the best thing for him since he persevered and became a fashion icon.