The 12 dumbest things to do with your money in your 30s

Time is still very much on your side in your 30s — if you manage your money well, it can mean huge financial gains in the future. That's easier said than done. Plus, many of us tend to assume we'll have more money in our 40s and have plenty of time to tune up our finances, which can lead to some poor money decisions. Here are 12 of the worst, and how to combat them: SEE ALSO: 12 things everyone should know before investing 1. Not taking advantage of work benefits. If you're not taking full ad...