Assertiveness is necessary in American culture. The following are some basic principles to try. These people don't directly express their feelings, wants or needs. They communicate indirectly by frowning, crying, or whispering. They smile a lot and subordinate their needs to those of others.
Posture is likely to be slouched and eye contact is difficult.
Because often you're not saying what you mean, you don't look like you mean what you say. Aggressive style - They say what they need to say at the expense of others' rights and feelings. Sarcasm and put-downs are typical of this style. They attack when they don't get something their way and blame others. Physically they stand with their feet planted apart, hands on hips, and use rigid gestures, like pointing a finger or fist.