I think its that last I love you, you say, before you realize you don't.
Last Resort Technique is basically what PMA outlined so nicely above. Stop pursuing at all. Stop doing all the things listed. No gifts, no flowers, no I love yous......
Get a life means different things for different people, but it could be to do more things with your kids, join a softball team and play, go out with friends without your spouse, play golf. I'm going to a music festival that we regularly attended together with other friends. Get your own life, apart from your spouse.
Going to be very hard for me to do. I spent almost all of my time the last couple of years with my spouse because I wanted to. Apparently, she didn't and it drove her over the edge.