I must have issues with group lead or vice versa

can't believe I had a fight with group lead again in a meeting. I thought there should not be any disagreement today or at least we would not argue. But, during the discussion, I realized that he has wrong predisposition and I tried to make him aware of this. he never listened and we came back to the same point again and again. I almost lost my temper there and then. Christ. When am I going to get out of this place?!