I don't worship Satan's power
Are you sure? You ascribe to him an awful lot of power that the scriptures don't.
A Christian is vulnerable to Satan just like Job was vulnerable to Satan
Maybe you ought to reread Job. You might notice that Satan was only able to do to Job what God allowed, and nothing more.
I say we are double-minded when we think it is 'normal' to be both a sinner and a christian...whereas the scripture sets the goal as overcoming our sinful nature.
Well then, Paul must have been a real failure as a Christian, because he said:
1Ti 1:15 This is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief.
Maybe part of the double mindedness Jame spoke of is the double mindedness of dualism, which seems to be what you adhere to. Satan is a creature, not an omnipotent being, and as a creature he has a creator, which is God.
Do you say you have no sin? Then here's what John said about anybody that said that:
1Jo 1:8 If we say that we have no sin, we deceive ourselves, and the truth is not in us.
1Jo 1:9 If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
1Jo 1:10 If we say that we have not sinned, we make him a liar, and his word is not in us.
Satan is not able to delay or in any way confound God's plan and decrees, no matter what he wants.
Yes, we overcome sin, not by our efforts, but by the Blood of Christ, and the sanctification of the Spirit conforming us to His image. But as Paul and John understood, and as the Spirit made plain through them, we do not attain to full sanctification in this life, but in the next. To believe as heretics like Finney, that we can acheive that, is to set ourselves up to fall. As soon as you commit your next sin, Super, you will have lost this thing you claim. And you will commit another, if nothing other than pride. Are you then lost? You live on the razor's edge in that theology, which is not scripture.