Instead of worrying about what to say or do when in the company of others, focus instead on how you make them feel. That would include your body language, facial reactions, attitude, the questions you asked and how you respond to their answers. If you think that all this is too much for you at the moment, start with something simple. Begin with the right intention – that you want to make the other person feel great and at ease. That awareness would enable you to make better choices in the interaction. Say for example, you have the urge to tell the other party about your accomplishments because it makes you feel good, you would perhaps pause and think if that would do the same for him or her. If it will not then hold yourself back. You will appreciate it later.