I've said it before and I'll say it again, it is extremely dangerous to commit any suicide when people are around and inside the same building. Never attempt it. The safest bet is always attempting when nobody is home, and when you do that you should lock all the exits in the house, preferably with devices schools use to protect against shooters. Block your bedroom door with a wardrobe and lock the door. Never attempt when people are inside the house, you risk extreme brain damage and a long slow, depressing life of enjoying food fed to you from your throat by a tube. DO NOT ATTEMPT.