Listen to your conscience!!!!! Cant stress this enough; with 25 years skiing, I have never gotten hurt or ended up in the hospital. When the mind says no, its no.
Now, how to overcome this little voice.
Step one: Start small...really really small. Baby parks in the morning are really nice to step up the game before the gapers wreck it. Practice going a little above your ability on the down days by skiing faster, or jumping further than normal. It will build confidence.
step two: Get some friends that know their shit and ride religiously with them. Some girls can throw down better than guys, plus they had to figure this out on their own. Dont rely on guys advice on tricks and stuff, we are built differently. Get a female coach.
Step three: Take a break, ride something different for a few days and come back later. Your mind will let you step up the game when the confidence is high. Taking a break relaxes the muscles and relieves the mind of the stresses of a feature. I fractured a thumb trying to push a cork 7 before landing a 7. I tried 11 years later with a huge load of experience and nailed it on the first try.
Step four: Remember there are good days and bad days. Listen to your mind; she will protect you from hurting yourself. On good days, the mind will be quiet and will let the body react faster so that the dreadful feeling of failure is reduced to a peep. A mental trick is to envision the feature or run. If you cant see it in your mind, you are not ready to try it. If you can experience the entire thing in the mind before dropping in, you can relax with the feeling that you have do it before.
good luck