I think the concept of freewill is somewhat of a misnomer - at least in the way it is used. Let me explain what I mean.
JWs would sometimes tell people that Jehovah dignified us all with freewill so we're free to choose whether or not we want to serve him. Used in this context, the JWs are trying to convey the impression that Jehovah is a reasonable God who does not force us to do what we don't want to do.
But contrary to this intended impression, according to their teaching, Jehovah threatens to destroy everyone who refuses to worship him. So how is the freewill that Jehovah affords us any different to the freewill that an armed robbers affords his victim whom he asks to hand over all his money while a gun is pointed at his head?
How exactly does a person's freewill dignify him if he is belittled, insulted and destroyed by Jehovah for making a choice that Jehovah does not like? A person's will cannot be free if they're being coerced by the threat of destruction, to make a particular choice.
And then there's the problem of sin. The bible says that humans can't help but do what is bad even though they want to do what is good. See Romans 7:21-25. So because of the concept of inherited sin and imperfection, every human is to some extent a puppet of sin, forced by his sinful flesh to sin in one form or another every day of his life!
And then there's the whole concept of the human mind - the seat of our will and desires - being a product of our physical brains which function according to fixed and unchanging laws of physics and wiring of which are determined by our environment. From the moment of birth and without our having any say in it, our brains and hence our minds, personalities and desires started being shaped by our environment. Freewill is just an illusion. Every choice that we make is determined by our environment. There is no ethereal self that is wholely divorced from, and that can make choiced independent of, the physical world. The conscious mind gives us the illusion of free choice. We are unaware of the plethora of physical forces that lead us to make particular "choices".