There are a number of things you can do to help overcome your fear.
Use your own skills and resources.
Think about a time when you helped yourself to cope with your phobia in the past. Can you use something like this to help you again?
Ensure you don't faint. If your fear is linked to fainting/feeling faint, you can do the following - Make a fist with both hands. Pump hands and muscles in your arms as if you are going to give blood for 10 to 15 seconds, or until you start to feel the warmth rising in your face. This can also be done by using your feet or legs.
Control your panic. If you feel panicky and have panic attack symptoms (for example your heart races, your chest feels tight and your stomach churns), but you do not feel faint, you can use a breathing exercise for relaxation.
Learn and use an Anxiety busting breathing technique - Take a long, deep, breath in through your nose, filling your lungs from bottom to top for 5 seconds. Breathe out a long, deep, slow breath out through your mouth for 10 seconds. Repeat the exercise noticing the feelings of anxiety reducing with each rep.
Try my Anxiety Relief Breathing by clicking on the button below.