If overcomplicating stops you from executing then build the parachute on the way down. 

Some people are great at planning each detail and executing while others just need to start

I’m one of those that works best by doing and then refining. Yet, I tend to plan for hours, become tired, and then fail to execute. How Ironic. That is my way of avoiding the work that may lead to failure. 

Execute. Adjust. Execute. No more planning.