The journey of life is about growing. About watching our current knowledge, ability and skills becoming inadequate and having to stretch to acquire new levels. That is the essence of becoming more. Never get stuck on thinking your current is your best ever. Its not!! You are meant to grow and keep exceeding.
Whatever you want to excel at and master - do not wait to achieve amazing levels to start. Amazing only happens when you start and keep trying over and over again. So get moving already. Right now as you are you are just fine to get started.