I'm an only child with two children. Young DD is gifted, impatient, bossy and often right. Older DS is patient and gentle. We all get along great because neither DS nor myself are competitive or mind being wrong.
However I've talked to DD repeatedly about how her tone can be perceived and work against her in school and in her future career; that there's a fine line between being clear and firm, and being patronizing and heavy-handed. She's in middle school, and she's getting it, but sometimes at home she can't help herself from acting like a tiny but mighty little tornado of facts and opinions