How Demons enter our Lives (by benaiah juma).
Demons enter our lives through sin. Sin is rebellion and disobedience towards God and his word. When a person sins for  quite a period of time without withdrawing himself or herself from that particular sin, a spiritual act takes place and the hedge of protection is broken. When the hedge of protection is broken demons will have access into the body of that person or the sinner. Demons come into the body of human beings through habitual sins. If you are into pornography you will get the spirit of lust, adultery and sexual perversions, if you are always displaying rage, you will get the spirit of rage. The sin which you are committing often will bring demons that are specialized in those areas.
Ecc 10:8  He that diggeth a pit shall fall into it; and whoso breaketh an hedge, a serpent shall bite him.

The lord uses demons to correct sinners. The aim of the lord is for the demons to punish you and make you afraid of sinning, and this will go a long way in preventing your soul from descending into the nether parts of the earth when you die. But the demons come in at the commission of Satan to kill, steal and to destroy your life. When these demons are into your life their objective is to kill you. The demons want to form a soul tie with you with the objective of dragging your soul to hell.
Joh 10:10  The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly.

When demons are in your body and you keep on sinning, the demons get a better grip of your flesh, mind soul and spirit and form a soul tie with you. You become one, flesh of the flesh with the evil spirits, the evil spirits literally become who you are. Your thoughts and behavior will represent demonic beings. The devils will make  you live a reckless life and you can end up committing suicide or any behavior that will shorten your life here on earth. All people that commit suicide all of them were under the influence of demonic spirits.

Anything that is an abomination before God is an open door for demons into the lives of those people commiting those abominations. The word of God says that whoever commits sin is of the devil. God is a God of free will, therefore He will let you make a choice on the kingdom that you desire to serve. Sin gives devils legal rights into our lives. A legal right or a foothold is what the devil uses as an excuse to dwell in your flesh and destroy your life. As long as a person is sinning and has not repented the devil has access to his or her life and will not leave unless that person repents and renounces the sin that he or she is committing.

God cannot protect you from unclean spirits if you keep on sinning without repenting. He will allow demons to come into your life. If you keep on sinning you will keep on being hammered by demonic beings, and if you are not careful the years of your life on this earth will be shortened.
Pro 10:27  The fear of the LORD prolongeth days: but the years of the wicked shall be shortened.

Demons can beat you up by taking you to the clubs, making you drink a lot of alcohol to the extent that you do not know where you are, and you might end up having memory loss as a result of excessive drinking, or the demons can lead you to live a reckless life if you are a female and get raped or something bad happens to you. Sin is deceptive and in the pathway of unrighteousness there is death, weeping and gnashing of teeth.

In order to prevent demons from coming into our lives we must be holy and stay obedient to Gods word. When we are obedient to God
s word all the demonic doors will be closed and we will live happily. The more we draw closer to God, the more God draws closer to us and we will be at peace, and the more we draw further away from God the more demonic forces try as much as possible to shorten our lifespan here on earth through sinful and reckless lifestyles. Sin is a killer. Sin brings demonic forces into our lives. If you hate satan and his demons you have to remain faithful to Jesus Christ and avoid sinning till the day that you die. Here are some of the sins that can bring demons into your life. Click on the link below to check out the sins that i have outlined. Thanks.