The good news is that it's not too late to start learning better money management skills.
"The upside of money regrets is that it shows there's room for improvement," says Kim Palmer, a personal finance expert for NerdWallet. "They can serve as a useful reminder to others to get started with money management today."
One of the simplest ways to improve your finances is to cut back your spending and start saving more. As financial maven Suze Orman shows, living within your means is a key factor in growing your wealth.
Saving money might seem easier said than done, but as NerdWallet points out, small changes can add up. Things like renegotiating bills, refinancing your mortgage, shopping around for insurance and using a cash-back credit card require minimal time up front, but pay off consistently in the long term.
"Focus on taking some small action steps that can have an outsize impact," Palmer tells CNBC Make It.