Maintaining our Profession (Hebrews 10:25)

Hebrews warns us, "that if we go on sinning deliberately…. there no longer remains a sacrifice for sins" (Heb. 10:26). This is a pretty severe warning because it sounds as if we consciously sin then there is no redemption. Further, you combine this warning given to us in Hebrews 6 and we might be temped to give up on our Christian walk. Where is our hope? How do we know that we can attain the substance of our profession? What does it mean to maintain our profession?