Couldn't agree more with your post. Normally I tend to be skeptical to a lot of the preaching i've read on steemit. But this is for me, spot on. We can't fully be without sin, but being a christian means that you never get comfortable sinning and settle with it.
Luke 9, 23: Then he said to them all: “Whoever wants to be my disciple must deny themselves and take up their cross daily and follow me.
We must daily choose to be christian and try to live after Jesus example. But we are, as you say not perfect. Therefore it's good to know that God's grace forgives us and helps us through this struggle.