You have to wrestle against the things that prevent you from getting to God, and you have to wrestle in prayer for other souls. But never say that you wrestle with God in prayer; this idea is scripturally unfounded. Attempt to wrestle with God, and you will be crippled for the rest of your life.

“He touched the socket of Jacob’s hip so that his hip was wrenched”

(Genesis 32:25). If God comes into your life in some way you don’t like, and you try, as Jacob did, to wrestle with him, you compel God to put your hip out of joint. You should wrestle; God doesn’t want you to hobble along weakly in his ways. Just make sure you’re wrestling the right things. Be someone who wrestles before God for other souls and against those things that would keep you from him, and you will be more than a conqueror through him (Romans 8:37).

Wrestling before God in prayer prevails in his kingdom, so long as the one praying is complete in Christ. If you ask me to pray for you and I’m not complete, my prayer counts for nothing. But if I’m complete in him, my prayer always prevails. I have to put on the full armor of God before I pray; prayer is effective only when there is completeness.

Always distinguish between God’s order and his permissive will. God’s order is unchangeable; the things he allows by his permissive will are what we have to wrestle against. God uses his permissive will providentially to turn us into his sons and daughters. Our reaction to the things he permits is what enables us to get at his order. He asks us to meet these things head–on, not to be like jellyfish, floating along and saying, “Oh, well, it’s the Lord’s will.” Beware of drifting lazily before God instead of putting up a glorious fight so that you may lay hold of his strength.

Wisdom from Oswald

The attitude of a Christian towards the providential order in which he is placed is to recognize that God is behind it for purposes of His own.  Biblical Ethics, 99 R