There are many ways to solve arachnophobia... I recommend giving some of those a try.
Well, this is an opinion based question so it could go either way. I think it’s difficult because like anything, s*x can be an addiction. Though there is therapy, getting someone to do the act can be cheaper & easier.
Nail bitting is a unhealthy habit because you're damaging your nails and plus there is so much bacteria under them. How you could stop it is put a rubber band around your wrist and snap it every time you feel like bitting them? Haha idk.
Answer:
It is important so you feel positive about yourself and see your self differently. Also you don't have to worry what other people say about you.
Explanation: