In your struggle against sin, you have not yet resisted to the point of shedding your blood.
(Hebrews 12:4)

I can't imagine shedding one drop of my blood resisting sin.  First of all, I live in a country and in an age where this probably will not be an issue.  Secondly, I'm your basic coward.  Thirdly, Jesus has already shed His blood, knowing that I will always struggle with sin and can't be successful on my own.  His blood was shed for me...instead of mine......and in spite of my own sins and weaknesses.