Don't worry

Have you ever felt worried about something because you haven't done it before?  Worry and anticipation are natural, but you can sometimes paint a picture in your mind that isn't helpful.  Once you have actually done something then you can have a greater grasp of what it is like, but even then the more you do something the easier it becomes.  So don't worry yourself, because whatever it is might not be as bad as you thought.  Once you have done something the once you then have knowledge about it that you didn't have before.