On the one hand, we can't fight the YH ourselves and the only true way to succeed is by surrendering the victory over to Hashem. But, at the same time, we can't just continue to do what we've been doing and say "Look Hashem, I'm in your hands now so don't have complaints on me!!" So how do we resolve this seeming contradiction?
So this is how I view it. I have determined within myself to fight, fight, fight relentlessly to the bitter end. No relying on GYE, or friends, or wife, or even Hashem. The fight belongs only to me. However, I am actually powerless to win the fight. So the outcome - the victory - that I surrender completely to Hashem. It's like the Chazal "Lo alecha hamelacha ligmor - it is not incumbent upon you to finish the work", i.e. to conquer, to succeed. It's our job to fight. And Daven real hard that Hashem will bring us home victorious.
So - The fight is ours, but the outcome we surrender to Hashem.