I was referring to fears that you can tackle to help give yourself a confidence boost. Scared of heights? Skydive. Scared of swimming in the ocean? Learn to scuba.
These are things that will better YOU. And a better YOU, means you will be a better father, and husband.
Doing these things also brings a sense of adventure to your life. And I don't know anyone who isn't in someway drawn towards someone adventurous.
Someone I really admire is Bear Grylls. The guy is fearless. But he's also humble and down to earth. He exudes confidence and people gravitate towards him.
If your wife was to ask you what you had planned for the day as you were walking out the door and you said "I'm skydiving today". And then you walked back in the door a few hours later with wind blown hair and this new sense of confidence and excitement. Do you think that would make her wonder about you?
Perhaps you are stuck in a routine with her. You spend your day shopping with her and listen as she talks about what she wants to do with the house.
What if you were to say "I can't hang out today. My scuba lesson starts at 2". What would happen?