Spoken English, it's not my first language and communication is a struggle. This wasn't much of a hindrance on my career as I've mostly worked within my country

Spoken English, it's not my first language and communication is a struggle. This wasn't much of a hindrance on my career as I've mostly worked within my country and can read technical English just fine, but now that I'm working remotely for a foreign company I'm kicking myself for not having paid more attention to it earlier in my life. I'm a disaster at conference calls. Lately I've been extracting audio from YouTube videos and shadowing, this helps. Spoken fluency is mostly muscle memory, I think.