What the original commenter said is correct, meditation helps you see how thoughts arise in the moment, and with practice you can get to a point where there is very little noise and instead you have a broader view of ideas and your life in general.
It is also calming, for your entire system. Learning to monitor and control your breathing consciously is a serious mental workout. If you have never sat down to practice it, you might surprise yourself as to how much is going on in your own mind and how the wheels and cogs just keep turning.