A letter of advice

My best friend seems very anxious a lot. She bites her fingernails and looks tired all the time. I don't think she is eating right, either. How can I convince her to take better care of herself?
1- Have you thought about finding the reason for of her behaviors? If you find the causes you will be able better to convince her to take care of herself.
2- What about inviting her to a trip outside of your city, therefore she might get relaxed and think about her problems more and solve them.
3- It might be a good to make an appointment for a psychologist.
4- One thing you could do is to persuade her to start working out regularly, because exercising effects the brain to release chemicals which make people feel more relieved.
5- Maybe you could invite her to a restaurant which serves good, delicious food.
6- Why don't you tell her to join a dance club?
7- What about setting her up with a boy so she doesn't feel lonely anymore.
8- Have you thought about putting spicy pepper power on her fingernails therefore she won't don't chew her nails anymore?!!
9- It might be a good idea for her to take do to meditations.
10- One thing you could do is to be with her and take care of her emotions.
11- Maybe you could ask her to come over some nights.
12- Why don't you talk to her family about her problems? There might be an issue within her family.

Good job! Keep up the nice work!