If you wanted to exercise your "Free Will," jump off a cliff and end your life and three or four big guys came around and wrestled you to the ground, would you be upset with them for violating your "Free Will?" Perhaps at the moment but what about after you had time to gather your thoughts and in a moment of clarity you realized how stupid it would've been to end your life and despite how bad things may happen to be at the moment, you still want to live? Perhaps you would then be thankful that these men were around to prevent you from making such a dumb decision? Perhaps it is divine providence intervening on your behalf and I believe we are all grateful that God has done so regarding the manner in which each of us may have come to a saving faith in him!
Sometimes we give the Devil and his demons way too much credit than they actually deserve! We are capable of doing all sorts of dumb things without their assistance!
God would be quite merciful in having these men at the right place at the right time to stop you from doing something that was really, really dumb, right? Then again, he could've just let you exercise your "free will" and allow you to make that "leap into eternity!" We often hear in the news of similar circumstances ending either heroically or tragically. God is sovereign over both is he not?
God is glorified when people see you singing that "New Song" that he has placed in your mouth making you a new creature and having you clothed and in your right mind!
Now, I know you disagree with me regarding certain aspects of "Calvinism" but I'm sure you can say "AMEN!" to everything I have stated here right?