I had a quick question. Recently a co-worker posted a how-to guide entitled "How to be a good leadership at work". To me the sentence seems incorrect. But I can't explain why. Technically leadership is a noun, just like in the sentence "How to be a good person at work" would be correct, because person is also a noun.
Perhaps it's one of those things that sounds incorrect to me but really is correct. Can anyone explain this to me?