During the last year of my first marriage, right before it crashed and burned in divorce, I was online searching for answers to the marriage problems I was having.
I started with trying to learn the Islamic laws of marriage. It turns out that improves your relationship about as much as the Islamic laws of sacrificing an animal improves your cooking.
Then, I turned to the coaching world. After all, I was a professionally trained coach and had taken dozens of personal growth seminars and read perhaps hundreds of books at that point.