I recently was reading a paragraph in the book authored by Elizabeth Gilbert of "Eat, Pray, Love" titled "Big Magic".
She (Elizabeth) met this woman named Winifred who was 90 years old. At 80 years old, Winifred decided to study Mesopotamia and for the next 10 years became academically an expert in the field. At 80 mind you she decided this. She has said that it "totally changed my life", looking back at those 10 years of study. Holy crap girls...what an inspiration. Never...ever stop learning, achieving and making your life what you want.