Curio,
Maybe it seems different this time because you are quitting for yourself, and not to prove something to someone else.
This is my first real attempt at quitting, and I'm on day 20 (the longest I've been sober since the late 1980's). I really haven't set a goal for how long I'm trying to stay sober (unless my life time counts?), because I fear if I reach that goal, I'll start thinking that it's okay to drink again.