As to practice, a believer should not yield to sin. In practice, a believer should yield to righteousness. Let's make Good Friday and Easter Sunday personal.
Sanctification means to be made holy.
The process is going on all the time in a believer's life. Therefore, the Christian is to reckon himself to be dead to sin, but alive in Christ. As long as we are alive on this earth, we will sin. However, we are not to let sin reign. When Christians receive their resurrected bodies.