What can I do to save my marriage? Help

[Sleepy]

She confronted me about the books. I told her basically what coach wrote previously.

She said "Am I your next hobby? Why did you hide those books?" then she asked.."Why is it that what ever you do ... be it your medical degree, MBA, finance, triathlon, you have to go at it 110% ? " ( really that's what I do )

I answered, " It's about making myself into better person... If it's with you great, if not, at least I will be better the next time around with another woman in another relationship. The books are private."

With that, she responded with a half laugh.