How Much Striking Do I Really Need to Know to Be Sufficient in Self-Defense?

Charlie Rose has been boxing for the first time in 12 years. He says it's important to experience what a fight feels like before you learn how to respond appropriately. In Jiu Jitsu he can sort of keep his frames and kind of keep himself safe when he is tired, but that doesn't always work out so well against other fighters who are better at striking than him. "I feel comfortable by just time and experience" Rose said about being an elite striker.