I was actually surprised to hear someone else admit the "button idea". I guess it has to do with the nothingness one probably has when they die (kind of like sleeping).
What stops me from suicidal thoughts is what family and friends will go though if I do it. Our button really needs to wipe out the whole planet in the blink of an eye, which I don't think will happen.
I don't really think about it these days, it was more when I was younger when I was busting my arse, going to college, save money, work hard, don't get a girlfriend yet cause they cost too much, keep a small circle of friends because too many friends becomes to hard to maintain etc.
Seeing a psychologist about semi-depression is the best move. It doesn't have to be a psychologist but they will probably provide you with the most direct path to address what your talking about. Just talking to someone and getting their ideas about your thoughts might give you some direction/make goals clearer and/or exposure areas in your life that you need to address.
Maybe give these guys a call, its free; National Hopeline Network: 1-800-SUICIDE(784-2433) - a 24-hour toll-free suicide prevention helpline network that routes callers to the nearest community based crisis center, United States
Wikipedia is a great resource as well. Checkout Motivation
I like Maslow_hierarchy_of_needs
Maybe open a hole bunch of browser windows on topics which interest you and your way through them. Something might grab your attention then print it out and go read it at the park?