say u have an instructor. u go to him once a week for 1 hour. now say u practice 8 hours a day. who's teaching you now??? you're teaching yurself. the instructor is there to correct your mistakes, your bad habits. but for those 8 hours a day, u gotta make sure your arent doing these bad habits. instructors are there to show you how to do things right, yur there to enforce those rules.
so even if u get an instructor your still leraning on your own. but an instructor is there to help you. so get a teacher.
Practice 8 hours a day and God Bless you.