A lot of people believe that once you become a Christian you lose all temptation to do worldly things. When one becomes a Christian, they are not reprogrammed to do right, rather they have the Holy Spirit to help direct their decision making process(John 16:8). What would be the point of God making us do right? That would not display our true devotion to Him; it would be a forced devotion!
As a Christian, I still have temptations to do worldly things; it's sort of like I have two "selfs". When I am tempted by worldly things, my old self wants to do it, but my new self in Christ knows better. New Christians will find this the hardest part of their walk with Christ because many will accept Christ thinking that they will not have to worry about doing right-they think they will just do it.
Do not be afraid that you will not be able to handle the temptations of this world though. Romans 8:1-2 says, "Therefore, there is now no condemnation for those who are in Christ Jesus, because through Christ Jesus the law of the Spirit of life set me free from the law of sin and death."
When you are struggling to overcome your old self, pray to God asking Him to help you take control and to rely on the strength He provides. The more you rely on the Holy Spirit, and the more you make an effort to live life as the new you through Christ, the more you will find God's blessings in everything you do. Dig deep into God's word so that you will be more in tune with what God wants for your life. Only then will you overcome your Spiritual Schizophrenia.