Need advice on being admitted to mental health hospital?

These hospitals have been around for a while. There has been thousands of patients before you. If there was a way to hurt yourself someone has already discovered it and tried it and the hospital has already taken steps to prevent anyone else from trying it. The staff has nothing to gain from watching you take a shower or go to the bathroom. I take it from your writing that you are not an American, and I am, so everything is not going to be the same, but the smallest hospital I have been in had 10 or 15 patients and the largest had easily more than 30. They don't have enough employees to follow every move you make, even if it was necessary, which it is not. Where I live they have all the patients in the same room during the day because the law says they have to check on you every 15 minutes, and after bedtime one person with a flashlight walks up and down the hall and just looks to see you are sleeping and they move on. Also, I smoke too, and I have been in palaces where they will let you go into an outside area under supervision and you could smoke 8 cigarettes a day. In the places where you couldn't smoke, they will give you a nicotine patch and most likely if you ask the doctor he/she will prescribe a tranquilizer such as Lorazepam and it takes the anxiety out of your cravings and keeps you calm. It is not so bad.