This struggle will pull you in... so what will you do with it? You can keep mulling over the failures & let-downs of your life, or you can take the Word of God as a sword and start doing some good for the kingdom of God on this earth.
Start walking in authority, start acting like a Christian, start living in freedom, start commanding the storms, the winds, the waves... to submit to the name of the Almighty God, Jesus, the victorious King!
Stop letting the devil beat you up & give him all that credit & start taking your Sword & say, Devil, I'm not only chasing you out of my life, but I'm also chasing you out of my family, friends, neighborhood, community, church, & everywhere I see your evil works, I will destroy them (ie. heal the sick, lame, diseased).
Come ON! When the devil knows you mean it, then you will start to see results. As long as you want to sit around and complain, the devil is happy to give you a pity party, sympathy, & reasons to be selfish & self-absorbed. Seriously, if disease was from God, then why does it make people needy, selfish, dependent, etc?? God sets us free to serve the world & lay down our lives, not to require the entire energies of every family member & friend who comes along.
Lay down your life by getting sick of letting the devil win in your family & start winning others battles too. That's where real joy is found. In seeing the glorious kingdom of God WIN in people's lives. Joy unspeakable & full of glory. GO & WIN!