^: That is a really tough one. If I were killing my self, then I'd set up some kind of asphyxiation, like going to bed in a sealed room with a few candles lit. If I were murdered by someone else... there's a much larger chance for some kind of painful violent death. I suppose if I had to pick between the two I'd rather choose the less painful option, suicide. However if it had to be murder or suicide, but the murder could be made to look like suicide, that would be better since I don't think I'd ever actually break down to the point where I'd kill my self (Most likely if I did break that far someone else would end up killing me in self defence). Alternately looking at the bigger picture, my various life insurance things (IIRC my company has one on me, as well as the one I pay for.) would pay out if it were murder... so my friends and family would be better off with it being murder. Thus I eventually decide it must be murder.
V: If you were suddenly extremely lucky, for a brief time, like Harry Potter with that luck potion stuff, what would you attempt that you normally wouldn't? (Remember, specify only the tightest end goal possible, the method for reaching it might be far different from what you expect.)