Your goals become a lot less daunting when you focus on the smaller, more accessible steps you need to take to achieve them. Believe me, I feel overwhelmed in the little things I have to do day-to-day. I'm constantly reminding myself to take things just one step at a time. It makes everything manageable.
If you have spent your professional life living in your head, pushing yourself harder and harder, this may be a dramatic and welcome change. You can stop trying to prove yourself to the world, to your boss, to your customer, and focus on proving that you are good enough and content enough to yourself.