My question is this: Do you even know which demons you are dealing with? My guess is 'no'. But the partying lifestyle always involves demons of lust, greed, rebellion, witchcraft, alcohol, fear, rejection, fear of man, and hatred...of self and others as well.
SO, you need to confess the ACTIONS and/or thoughts involved with partying and any of the above listed sins, AS SIN, ask for forgiveness, REPENT...that means you don't do it any more (and don't think going to a party happens 'accidentally' because it does not). When you ask for forgiveness, understand that you receive it...God knows your heart! Once received, command the spirits (above) leave you in the name of Jesus (You ARE born again...on a specific date, right?).
Then ask the Father to seal your heart and soul with the oil of the Holy Spirit and to fill you to overflowing with His Spirit. Pray Eph. 1:17-21 and 3:17-21 daily over your life, personalizing it for yourself. Stay in the Word, spend time in worship and prayer. And it should no longer be a problem. Remember the demons will try to come back so you need to be persistant....because THEY will be persistant until they tire when they see you are serious about knowing and serving the Lord Jesus.
Maggie