Secret to Productivity: Learn How to Say "No"

I recently came across a case study done by King’s College in London on how “Overthinking Worriers are Probably Creative Geniuses“. As comical and true this might be, over thinking opportunities make it hard for us to just say “no”. We think any opportunity that allows us to create should have us screaming yes! But in many cases this isn’t true. What we don’t realize is that taking on too much will lack the quality of products we produce for the world.