Complaining at my children

Today, some of my complaints were against my children or my wife.

I attended a training course recently where they said 80% of the language we hear must be positive if any learning or meaningful development is to take place.

So does that mean that if we can achieve 100% positive, then learning and change will be enhanced?

I am certainly certain in the belief that I will never change my children's behaviour by complaining at them. Never.

So what is the point? It doesn't make me feel better! Complaining at my family, however mild the complaint might be, is unhealthy, unhelpful, and achieves nothing.
It's good to see others in my family use more positive language towards me as I model it to them.