No matter what the case is, always be honest with your loved ones. Lying isn't tolerated in my household and is seen as a sign of extreme disrespect.
2) Pick up after yourself
A lot of the time, my family and I take turns doing the chores. Some nights I make dinner, some nights my mother does, some nights my boyfriend does. It's mostly about distributing the work so not one person has to do it all.
Other than that, we just try to stay respectful about things without being tyrants.