Do you passively wait to be taught by a teacher or textbook? Or do you actively seek out the knowledge you need to speak your target language?
Active, engaged learners are far more successful than passive learners.
I was a passive learner in my 4 years of high school Spanish. I am an active learner of Korean. That is why I say that even though I am still finding my way, I am further along in Korean in 1 year than I achieved in 4 years of Spanish study.
I am glad to have the advice of folks who have already walked this path of learning. I have taken sidetracks along the way. I am deeply grateful to Rob Julien, Woojae Jun, and my many Korean mentor-friends-language-exchange-partners for their help. They have seen my consistent-but-often-misguided efforts. I believe they are willing to work with me because I actively seek to learn.
There is a saying “when the student is ready, the teacher will appear.” When you take charge of your own learning, you become a student teachers want to teach.