Why now? Why, when I seem to be doing so good in life, do I suffer from this crippling anxiety now?

Sometimes when we are doing our best and achieving great things and reaching milestones anxiety can come along and be like a roadblock, but a roadblock is not the end, it is only a detour and you will make it through this. Do you know what kind of situations are causing the most anxiety for you? Analyzing this could help you to make a plan for when anxiety arises in the future. I think recognizing that you are doing good is amazing, I empathize with you, and you are not alone. I believe in your ability to achieve your dreams.