A person's weight is not determined by explanation, but by reaction. How others treat you largely depends on how much you allow them to treat you that way.

Your expression defines your stance;
Your rebuttal guards your principles;
Your refusal draws your boundaries;
Your turning hostile reveals your bottom line;
Your anger is not losing control, but defending your dignity;
Your decisiveness is not impulsiveness, but the ability to take responsibility for your choices;
Your striving is not competitiveness, but responsibility for yourself.