Alright, one thing I've had enough of lately is people giving me advice that are no way qualified to do so.
Don't kick a person when they are down. If I'm telling you I'm having a bad day or I'm frustrated, I told you so is not the correct response from any friend, relative or acquaintance. Or better yet, they have no children or one child and tell me how much harder it is when they get older "you just wait!".
Being a mother of four children is one thing, being a mother of 3 year old triplets is a whole different ballgame.
If you can't say anything nice (or positive) don't say anything at all.