1 John 3:7 Little children, let no one deceive you. He who practices righteousness is righteous, just as He is righteous.
There will be many who try to change your mind about things by saying things to you and doing things differently; what we need to do is take a good look at what they are doing.
Those people who always do the right stuff are generally good people and those who do not are generally not. I say generally because there will be those who do things to deceive.
It is easy for a good person to get something wrong when they are trying to be good. It is very hard for a bad person to not do something bad. Spot the difference?