Productivity is often a distraction. Don’t aim for better ways to get through your tasks as quickly as possible, rather aim for better tasks that you never want to stop doing.
Experience is overrated. When hiring, hire for aptitude, train for skills. Most really amazing or great things are done by people doing them for the first time.
Be prepared: When you are 90% done any large project (a house, a film, an event, an app) the rest of the myriad details will take a second 90% to complete.