The Richest Man in Babylon In good times and bad, consistently saving a percentage of your income is a sound financial practice. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Your Changing Definition of Risk in Retirement A change in your mindset during retirement may drive changes to your portfolio. The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. The History of Currency Currency has been around for a long time. Here’s a quick history lesson.