First, the 10k hour rule doesn't mean people are terrible and then suddenly become experts. They are getting better the entire time. I would argue the large maj

First, the 10k hour rule doesn't mean people are terrible and then suddenly become experts. They are getting better the entire time. I would argue the large majority of working professionals are nowhere near experts at their jobs for the simple fact if someone is any good they tend to get promoted to a new job. Second, I know many people who switched careers. You have plenty of time at nearly any age if you are willing to be humble and learn. I have found that it's not that older people can't learn, it's often they are unwilling. At someone who just turned 45, I make it a point to practice humble learning daily. Finally, think about what you can uniquely bring over from your old career to your new career. People skills transfer very well, but also industry knowledge and general business.