Getting better at golf requires you to spend time with your clubs at the course, in your backyard, basement or local park at least.
You cannot think, buy, talk or dream your way to better golf. It requires time and effort.
An excellent coach can make sure you spend your time and effort very productively. This is the purpose of lessons. Lessons help you understand and continually remind you that you are involved in a process that takes time and effort. Lessons also undoubtedly help you speed up that process.
