However . . .
The power to overcome sin ≠ less inclined to commit sin
The Holy Ghost is definitely a big dose of supernatural help, but it doesn't change our human natures. I've been told many times "You have the Holy Ghost!" in an incredulous tone by someone trying to exhort me or admonish me in the Lord, especially by those old faithfuls whose young days were lived out in revelry. Example:
"When I was your age, I lived like a heathen. Sure did. I didn't know the Lord. I was involved in all kinds of crazy things and it's only by the grace of God that I'm here today. But you . . . raised up in this precious faith. You have the Holy Ghost!" (read: How dare you act like a human being?)
You were once young, did whatever you wanted (you didn't have the Holy Ghost, so you can't be blamed) but now that you're older and wiser and found the Lord, you're good. I, young as you once were, am barred from succumbing to human frailty because I have the Holy Ghost (therefore the reasons you did stupid stuff when you were young are non-existent for me). No slack is cut for me because, by golly, I have the Holy Ghost! I'm supposed to be above failure.
I'm thankful for the Holy Ghost. His spirit within me is one of the ways I know He's real. But it doesn't erase our humanity. As much as I wish it did, the Holy Ghost does not make people superhuman. I mean, who wouldn't want to leap tall buildings in a single bound?