I have been in the worst mood for a week or so and I can't stop it.
Oh no, You're not planning on doing something bad, are you?
Yes, I'm thinking of killing myself.
Killing yourself is a not a solution to your problems. If you feel depressed and suicidal you should seek professional help immediately.
WTF, when I think about it properly my life is fine, I'm going to get off the chat now.
I do not know if you're just joking or you're actually serious. If you are seriously considering ending your life, I seriously need you to at least talk to a person you love so that they would talk you against it, as we sometimes just need someone in our lives to talk to.