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Musicfan:

but the challenge I had was doing many things in current role at that time, which was required for company, but couldn't tell what exactly I was expert in,

The company I went for interview, asked what I am expert at, I couldn't tell other than saying I can do anything that demands me to do.

I failed that interview, because they were looking for specific skill, which I was not able to tell I was good at that.

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