In the old days, a title was brief (e.g., War and Peace), but today the subtitle is the "teaser" and I'm glad you are using it.
Consider a short main title like “Sports Make You Crazyâ€ (subtitle: But you can still think, train, and thrive).
Think and Thrive: A Way to Train for Success.
Let’s keep the ping-ponging of ideas going, and ask everyone you know what they think. A casual comment often leads to a title.
At this point, if you are still drafting the text, then just pick a working title. Most famous books had other titles initially.