Self talk can also be dangerous because it can poison your mind against others in the same way that outside gossip can.  We need to be careful that we are not blindly accepting accusations from the enemy that are planted in our minds against others, especially our brothers and sisters in Christ.  If we are not taking every thought captive to the obedience of Christ, we may be accepting harmful messages from the enemy that will sour or destroy our relationships.

God pointed out that, when I was upset with my husband, I would start retelling to myself all of his faults, so I would feel justified for being upset with him for whatever I believe he did. But God revealed to me that I was believing the worst about my husband, and perpetuating that belief by my negative self talk about him.  I was poisoning my relationship with him by speaking badly about him to myself.

No relationship will ever get better if all we do is mentally entertain negative thoughts about the other person.  It is counter productive to healing a marriage or partnership when we reinforce every ugly thought that pops into our head about the person who has offended us.   God calls us to live at peace with one another and be in one mind and one accord in the body.  Planting and watering bad seeds in our souls about other people will cause a root of bitterness to spring up, and those are the hardest of all weeds to kill.

If it is possible, as far as it depends on you, live at peace with everyone.  Romans 12:18

So along with watching our talk about ourselves, we need to be careful about our self talk about others.  Stop poisoning yourself and your relationships with thoughts that tear apart the body of Christ.  Commit yourself to living at peace and building up the body of Christ instead.