I read that a lot from a lot of my favorite players growing up! I thought "ok if that's what it takes, that's what I will do" Over the years, I got some amazing results, even studying with two local jazz guitar teachers, and another who was home during the summer from Berklee college of music. Then I went on to study classical guitar and jazz guitar at Mansfield U. and I learned a lot there. But most people can't study guitar for that many hours a day... so what do you do? Deliberate practice... practicing the things that matter, and not worrying about the rest... even 15 min. a day is better than nothing. It's better to practice every day, than only a few days a week. You'll retain more and you'll improve more over time. It may take longer for you to achieve all of your goals, but start with small goals and go from there... If you want help with that DM me, and let's see if we would be a good fit to work together...