Finding the balance of thinking and working

Today I realized that I am an overthinker. I postpone things because of thinking, planning. I missed lot of time due it. But by thinking I found lot of new stuff. Those thinking is the main cause for the posts in this forum. I think there should be a balance. Without thinking, we may go in the wrong path. With overthinking, work won't complete. What are the suttas which states this balance? I know the story of Arahant Sona about effort. I really like to know about balance of thinking and working?