We have so many "hypothesis" about second language learning. I've commented on this before.
Today, just a shout out to the one thing I know that works for all. Not an hypothesis but a fact, - being busy. It's all about just keeping at it. It's all about day in and day out. That goes for teachers too. Endurance pays off. Stubborness pays off. Genius, so said Nietzsche, is just a question of endurance. So too, language learning success.
Get busy as a beaver - you'll soon have a dam holding back the chaos of sounds....
If you liked this post, you might like, "4 keys to learning language"