What's the hardest phobia to overcome?

What's the hardest phobia to overcome?

The hardest phobias to overcome are those ones that you can't do often. So for the fear of vomiting. You can't just make yourself get sick all the time and you wouldn't want to. So it's hare to because you're not getting a lot of practice with it to learn that you can handle it. Also the fear of flying is like that. You don't necessarily get to fly everyday so that fear lingers because you are not getting a lot of experience confronting it.