Same Old Slave with a New Master? or a New Slave?

Just reading Romans 6 and thinking about the slaves and obeying thing. If a slave of Mr. Jones spent his whole day thinking about Mr. Smith, the scene would look like this. “don’t obey Mr. Smith, don’t obey Mr. Smith, don’t obey Mr. Smith, what’s that, Mr. Jones? Yessir, I’ll be right there sir. don’t obey Mr. Smith, don’t obey Mr. Smith, don’t obey Mr. Smith, Yessir, Mr. Jones, what can I do for you? don’t obey Mr. Smith, don’t obey Mr. Smith, don’t obey Mr. Smith,

How silly! I think I can say that for many years all I thought about was how to sin, and different ways to get away with it. Not just like how to get this or that experience, but if whatever isn’t motivated and led by the spirt, then man, what a slave I was! So now that I’m not a slave to sin, what am I a slave to? I must say that Jesus is a much more merciful master than sin. That’s a funny thing to say. I guess in that I never feel helpless to obey Jesus, but I remember often being helpless to resist sin.
I guess it goes back to the ‘doing what is natural’ thing. Slowly it is becoming automatic for me to follow Christ in some areas.

In some it’s a pure act of will.