I have been using Rosetta Stone for learning Vietnamese. I found it quite easy thanks to my practice using Duolingo; that was, until I met my first Milestone. This consisted of a small story where I had to give verbal responses to a conversation. I found it quite tough, only getting 25% on my first attempt. In all the other lessons I was in the high 90's.
It brought up a lot of negativity about being stuck in fight-or-flight mode and not being able to respond to a question or comment. Thanks to a meditation I do, I was able to overcome that. It was a deep meditation with lots of stuff coming out.
After that, I tried again and didn't have anywhere the same level of anxiety. On the fifth attempt, I passed it.
So if you seem to hit a wall with learning a language, just keep going! Even practice the same lesson several times in quick succession, that's how I passed this lesson. Even better, get rid of the root cause of anxiety holding you back from learning new things.
As a result of doing this milestone, I'm more confident about talking to my Vietnamese partner in Vietnamese over a video call.