You're only 20 years old. Why would you start planning for retirement this soon, especially considering that your generation probably won't be able to retire until you're 70? If these are the primary thoughts that go through your mind when you hear the word retirement, you need to recalibrate. Planning for retirement in your 20s is vital, and it could even mean you get to retire earlier than your peers. Here are a few tips to guide you in your retirement planning at this point.