^This is also the way i understood it. Free will is determined by your own ignorance as to what will happen. At any given situation if you are a sane and rational human being you will choose the path YOU want. Not the one that was preordained as there was never any one that was preordained that you had any knowledge of to begin with. So it's incredibly stupid to believe that because you are destined to go to either heaven or hell you can basically do what you want as your path has already been decided for you, when in reality you're bombarded with information that tells you to be good and act according to the values prescribed for you in islam. This in of itself, if you are again a sane and rational human being, should be enough to convey to you that there's more going on than what you have in mind. All men choose their destinies, and allah knows what we will do, but he does not take away free will from us as we pave our own destinies. If you decide to drink, sleep your way around town, and just straight up ngaf about your religion then YOU choose to do those things and YOU will be held accountable. Just as if you watch your tongue, stay away from intoxicants, and basically use your life to help old ladies cross the street and do other nice things, YOU will reap the rewards from this because YOU CHOSE to act on actions that were/are rational to you. The problem here is people don't understand that there is no third party out to get you, or to hurt you. All paths are known and Allah knows which ones you are to take. Allah guides those he sees are willing to learn, and there is a great deal of unwillingness to learn, just like some people have already made up their minds on here. My hope is at least one person reads this and is helped out if they are confused.
I will follow suit and place forth an addendum asking Allah for forgiveness if i've said anything incorrect as well.