Retirement planning can be confusing at best and overwhelming at worst. When people try to plan for their golden years without professional advice, it’s easy to make mistakes that can cost you both time and money later on. Find Out: Retirees Share the One Thing They Regret Not Saving For Read Next: The New Retirement Problem Boomers Are Facing To get a sense of what some of the worst — in other words, most costly — mistakes people make in their retirement planning, I asked ChatGPT to help aggregate the in ...