hi Tracy!. First off, thank you so much for doing this Ask me Anything!
A very important question.
Honestly, just pick what you're passionate about. Learn what you want, and spend some time after hours to hone in on what you get excited about and become an expert. Then move on to the next project. I think the problem with JS is that it moves so fast and you always feel like you know nothing but the truth is that we all know something - it may just be in a different area of expertise than another. :)
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