I haven't been told "grow up" exactly, but I've gotten very similar things said to me. Most of my immediate family is aware that most of my life I'm a two steps forward one step back type person so they don't press me too hard, but others do.

Looking back though I can see how my depressive episodes definitely stunt my emotional/intellectual growth at times. That's when I'd hear things similar to grow up. Then I play catch up when average/hypo. Fun times.