Christians can have a bad spirit. 

But He turned and rebuked them, and said, “You do not know what manner of spirit you are of. (Luk 9:55) 

let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God. (2 Cor 7:1) 

Jesus Came to set the captives free

To preach the gospel to the poor;

He has sent Me to heal the brokenhearted,

To proclaim liberty to the captives

And recovery of sight to the blind,

To set at liberty those who are oppressed (Luk 4:18) 

He restored our authority so we can resist evil

We have jurisdiction on earth (Gen 1:28; 2;15) but we lost this jurisdiction because of disobedience towards God, and our rebellious adherence to satan (Luk 4.6). The devil usurped our original position (Joh 12:31; 2 Cor 4:4; Eph 2:2; 6;12). 

Jesus demonstrated the power we as humans should have, and commissioned us to exercise our authority (Mat 10:1; Luk 10:19). Jesus overcame the powers of darkness. (Col 2:15; 2 Cor 2:14). One who knows his or her jurisdiction does not fear rebellions of obstruction of justice, but determines to exercise authority over it  (Acts 8:22-23; 19:14).

We need to exercise our authority to evict bad spirits that we have allowed. 

“Submit yourselves to God. Resist the devil, and he will flee from you.” (James 4:7)

“You are from God, little children, and have overcome them; because greater is He who is in you than he who is in the world.” (1 John 4:4)

“For though we live in the world, we do not wage war as the world does. The weapons we fight with are not the weapons of the world. On the contrary, they have divine power to demolish strongholds. We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ.” (2 Cor. 10:3-5)

“Be self-controlled and alert. Your enemy the devil prowls around like a roaring lion looking for someone to devour. Resist him, standing firm in the faith.” (1 Pet. 5:8-9) 

Do your own deliverance 

1. Honest Repentance & Confession 

Repent through the sin list mentioned in the Bible. 

Gal 5:19-21; 1 Cor 6:9-10; Rom 1:29-31.  
Repent for disobedience, the root of all sins.  Repent for opening up, and allowing evil in.  Close and shut the doors.  

• Forgive and intercede for your enemies

Then Jesus said, “Father, forgive them, for they do not know what they do.” (Luk 23:34) 

(Mat 18:34-35; Luk 17:1-5)
Confront Christian Family Members who have hurt you. 

1. Repent – Ask forgiveness by specifically naming the wrong, mistake, fault, error. Behold, You desire truth in the inward parts, And in the hidden part You will make me to know wisdom. (Ps 51:6)
2. Recognise the hurt you have caused. You need to better articulate the pain you have caused than the victim. Seeing and understanding the effects of your sin, and what transgression (injury) it has caused. 
3. Restitution, restore back what you have broken, stolen, etc. Physically Repay, fix. 
4. Remorse – Godly Repentance (2 Cor 7:9) 
5. Relent Turn and by faith never do it again. 
6. Take Charge & Responsibility 

Give the eviction notice! “Away with you, Satan! For it is written…” (Mat 4:10) work out your own salvation with fear and trembling; for it is God who works in you both to will and to do for His good pleasure. (Phil 2:12-13)