Well I have a little name tag that says I'm an expert in several areas, if that means anything. One thing I learnt early on in my career at Bunnings, was to pay attention to people that know their trade and/or are very good at what they do.
I always thought that the information I can learn from them would one day pay off, whether that be when I build my own house or have to answer peoples questions on the subject.
I am reasonably humble about my skill-set but I'd have to go Expert in "D.I.Y", some-what lacking in specific areas, though I am very confident in the majority of D.I.Y applications.
Although I'll rate myself an expert, I will never stop listening and absorbing any information someone is willing to give to me.
I am also very happy to be corrected and told I am doing/sayin something wrong, so feel free to pull me up anytime.