Well this is an exercise I used in the past that I found helpful and have helped some of the people in my life.
Before you start the exercise you first need to read through it. Pace yourself as your reading. If your a fast reader you should digest each word before moving on to the next. Get yourself in a comfortable position. Whether it be lying down or sitting up it does not make a difference.
1. Now close your eyes and imagine yourself in a room that is completely relaxed. Focus on your breathing. The natural rise and fall of every breath. Become relaxed and let all your worries drift away. Notice your body can relax, and your mind can relax.
2. When you become comfortable Imagine a slightly more confident you sitting or standing in front of you. What is there posture like, how do you talk, breath, smile.
3. Imagine stepping into that more confident you. See through heir eyes, hear through their ears and feel the feelings of your more confident self. And notice that right in front of you is a more confident you; sitting or standing a bit taller, speaking a little clearer, a look of more self-esteem behind their eyes, projecting an aura of more charisma.
4. Repeat step three, stepping into a more and more confident you until you are overflowing with confidence. Be sure to notice how you are using your body, the smiles how they begin to form every time you step into your more confident self. Notice your breathing as it becomes stronger and more defined. Notice the light of pure joy as it forms in your eyes.
When your done Feed yourself affirmations.
"I'm a naturally confident person" "I am a person that people love to be around" "I am beautiful" go into detail. The more detail the better it will make you feel.
That's all it will take. You can do this exercise at work or at home. Just don't do it when your driving.
Hope this helps and remember "Be yourself because everyone else is already taken"
Live life laugh often and love forever.