Many years ago in Japan, a student came to a master of Kendo and said, "If I become your devoted student, how long will it take for me to master the sword?" The master replied, "Perhaps ten years." "Thats a long time," said the student. "If I try really hard, how long would it take me?" The master replied, "Oh maybe twenty years." The student was shocked. "First you said ten, now you say twenty years. What if I try as hard as I can?" "Well," Said the master, "in that case it will take you thirty years. someone as impatient for results as you will probably take a long time to learn anything."- Zen Golf pg. 178-179
No one knows how long it will take you.