What do I do when my mind and my feelings want to rule? I literally say to myself, "Shut up feelings. You don't tell me how to feel, I tell you how to believe!" Feelings change. They sway like the wind.
The wise person notices that and instead of getting trapped in the temporary emotion, they instead take what God said they could have and "They calleth those things that be not as though they were" until they are! For instance, they may feel weak but they will choose to obey the Word and say that they are strong (Joel 3:10).
Beliefs should not be swayed by the temporary nature of emotion. Why? Because feelings can't be trusted!
"By whose stripes you were healed" (1 Peter 2:24) So, when Satan tries to attack my body, I remind myself of what God said and I say, "Excuse me, devil, God will take this sickness away, so I'm not accepting it as mine! Jesus bore my sickness when He hung on the cross, so I'm not accepting it as a fact of life! NO!"
I put down the feelings and exchange them for the Word. I don't deny what's happening, I just choose to deny the emotion attached and don't let it wreck my faith in God. I choose to resist and instead, attack with my faith in God's Word.