Do you overthink?

I just discovered that the more we think about future the less happy we are. I always thought that overthink is good because I can then try to analyze things and see all the possibilities in the future so that I would be prepared. However, that also means more anxiety about the future it seems. Have y'all ever heard of overthinking? How do I stop myself from overthinking? Should I just keep myaelf occupied and my mind busy on the present?