How can Christians overcome sin in their lives?

The ability of Christians to overcome sin lies in their reliance upon the Holy Spirit. Galatians 5:16 instructs believers to walk in the Spirit, which enables them to not fulfill the lusts of the flesh. This means actively choosing to live by the guidance of the Spirit rather than succumbing to sinful desires. The conflict between the flesh and the Spirit will always exist, but believers are called to yield their members to God as instruments of righteousness (Romans 6:13). This daily dependence on the Spirit and commitment to God's truth helps believers resist sin and live in a manner that reflects their new identity in Christ.