This last week I have been doing a study on how to have victory in Jesus. God wants us to have victory in Jesus. But the fact of the matter is we already have victory if we are saved, it is just a matter of if we claim that victory on a daily basis. It is not something you obtain and then sit back. You must daily seek God, through Bible reading and prayer to maintain the victory God has given you. I am not talking about Salvation. Once you have Jesus in your heart, no one can take that away from you including yourself. But your enemy (the devil, flesh, and the world) are continually attacking you to beat you down and have a defeated life.
Psalms 119:9 Wherewithal shall a young man cleanse his way? by taking heed thereto according to thy word.
Thy word have I hid in mine heart, that I might not sin against thee.