Being a coach, I've always stressed three important things for the teams that I have worked with:
My list of rules for my daughter and son is as follows - you can decide if they're gender-specific, or good or bad:
This list is not complete... and certainly not exhaustive. I reserve the right to change and/or update at my whim... as new tidbits of guidance come my way. Please feel free to add or subtract as you see appropriate, as long as it works for you!