At just 15, Tuan Le made a bold promise: He told his parents he would help them retire in 10 years. The family had just immigrated to Canada from Vietnam, and Le's parents worked tirelessly to provide for him and his sister. "I remember my old man coming home at, like, 7 a.m., and my mom told me that he lost like five pounds after one week," the 25-year-old tells CNBC Make It . "That was an awakening moment for me. That's when I told my parents, 'Give me 10 years, I'm gonna retire you guys.'"