Thanks -- actually, interviewing is also a skill that is about as important as your tech background. I'm lucky to be gifted in the way I can convey my passion(s) (despite english not being my native language)

-- but people who don't will always struggle --

-- MORE so as they get older! --

So I know it sounds silly, but acting classes, talking in front of the mirror or whatever else might help a lot more than staring at a screen for a few days...