Express Yourself
I post this last month but I think it is important to post again.
Remember that if you have something to say make sure you think what you have to say. Write down your thoughts. Review what your important points are. Make sure your talking points are clear and coherent. Grab a friend to help you practice your speech. Bounce ideas off of your friend. Rehearsing your talking points with someone provides an opportunity to critique what you are planning to say.
Second, stay calm. Whether you are asking for a raise or want to talk about something more in depth. Stay calm and breathe. You should already know what you want to say. You already know what the end goal is. Just take your time to work through the butterflies or the anxiety and state your case.
Third, be prepared to receive a no and also be prepared to receive a yes. Whichever answer you get, thank the person for their time and leave respectively. If you get the answer that you wanted to get, then of course show your gratitude. However if you do not receive the answer that you wanted, save face and hold your head up high.