Our struggle is not in the natural. It is against evil forces of darkness that are doing their utmost to cause us to sin and to end up in hell. The reason why most believers cannot overcome and why they fail is because they are trying to overcome and defeat the devil by their own power, by their natural power. The only way that we can overcome satan, can overcome the desires of the flesh and the evil forces that attack us is if we do it by the POWER that Jesus gives to those who submit to Him and follow Him and that is the POWER OF THE HOLY SPIRIT. All the knowledge in the world cannot help you to overcome the devil. You need the POWER and the WISDOM of the Holy Spirit of God. Without the Holy Spirit, without Jesus we can do NOTHING.
The only way that we can overcome is if we SUBMIT to Jesus, OBEY Him and get FILLED with the Holy Spirit and then we have the POWER to overcome satan. We have to then STAY WITH JESUS, stay IN HIM, IN OBEDIENCE IN SUBMISSION to Him and then HIS POWER ABIDES, stays in us and we overcome satan because we FOLLOW Jesus and DO as He commands us to do EVERY DAY, STEP BY STEP.
It starts with submitting yourself to Jesus, REPENTING. Repent of SIN, repent of DEPENDING ON YOUR OWN POWER, depending on your own wisdom and then depending on Jesus Christ alone and on His Spirit that He will put in you. You have got to OBEY Jesus, you have got to REPENT, turn away from sin, turn away from trusting in yourself and trust in Him alone, OBEY HIM. Be BAPTIZED IN WATER and PRAY, SEEK the BAPTISM IN THE HOLY SPIRIT so that you can be FILLED WITH THE POWER OF GOD! Stay WITH Jesus, follow HIM, stay IN HIS POWER , stay IN OBEDIENCE TO HIM and you WILL defeat the devil.
On your own you can do nothing but WITH Jesus we WALK IN VICTORY every day!
May Jesus bless you.