In the same way, count yourselves dead to sin but alive to God in Christ Jesus.Romans 6:11 NIV
In the first ten verses of this chapter Paul has talked about our position in Christ. What physical baptism pictures in my death, burial, and resurrection, actually takes place when I come to Christ. I am baptized, or immersed, into him; and in him I participate in his death on the cross, his burial, and his resurrection. I have died to who I was, and have been resurrected to live a new life (Gal. 2:20). I still look forward to a bodily resurrection after this life ends. But I have already experienced a death to sin and a resurrection to new life.
The first 10 verses of the chapter portray a picture of what has happened to me in a spiritual sense. While this verse transitions me into the practical application of my position in Christ. A topic discussed in the remainder of the chapter. In Christ I have died to sin and have new life. So in my daily life I should consider myself dead to sin and alive to God in Christ. In other words, let my life here be in alignment with my position in Christ. I am not saved because I have cleaned up my life sufficiently. But now that I am saved, I should work to make my life a reflection of what Christ has done in me.