This is a really good question. I think the responsibility is in our court, but if we're taking the fullest measures possible and making full use of the grace He has given us, He gives us more. But we're never guaranteed free of temptation ever. In fact, when we think we are, that's when satan hits us.
Amen, Whitehorse! When we're weak and we realize our frailties and weak spots, that is when God makes us strong. But when we think we're invincible and no longer prone to sin, then Satan pricks our balloon, and we fall.