I thought the same twice. Until I relapsed. I knew, hmm, maybe 10+ people who tought the same. And relapsed. But I am still working hard and have positive thinking. I just stopped being naive. Another guy I know personally said "I am almost fluent, it is better and better". Now he is relapsed and depressed. But I know also 1 guy who didnt relapsed and he became a speech coach himself. So maybe you will be lucky :) If not, dont be too sad.