When negative thoughts come about those in your own house, usually these thoughts are from devils.
One way to fight these thoughts is to make yourself think of things you like about that person and began to pray for that person, thanking God for that which you like about him or her.
John 10:10 The thief cometh not, but for to steal, and to kill, and to destroy: I (Jesus, The Word) am come that they might have life, and that they might have it more abundantly.
James 1:26 If any man among you seem to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.
We can bridle our tongue by praying such things as:
"Please don't let me say that ."
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