Home & Family | Money & Savings | Your LifeMore than 20 years ago, Celia Nathan’s mother became very depressed. As she was flying from Maryland to Savannah, Ga. to see her mother, Celia read a book a friend had given her about depression. The book described recreation therapy and how it helped those with depression. Celia, always an active person, said she was immediately hooked. “I thought here’s a profession where you’re helping people and also involves recreation!” she told me recently. So she kept exploring the field and …