My husband and I have $250K saved at 59. I thought our retirement plan was solid until I learned my coworker saved $700K

Photo by by Image-Source / Envato Moneywise and Yahoo Finance LLC may earn commission or revenue through links in the content below. It's easy to feel confident about your retirement savings — right up until you find out someone your age has put away a lot more. Comparison can be particularly dangerous when it comes to money. Warren Buffett once made that point to Berkshire Hathaway shareholders: "As an investor, you get something out of all the deadly sins — except for envy," he said in 2010 (1). "Being envious of someone else is pretty stupid.