This is a subject we could talk about for days because there are so many different perceptions and everybody you meet will probably have a different perception on the subject, which is within itself free will :-)
Some will say that it's simply is the ability to make choices, those choices could be the same as or different to what others believe. If we take this way of looking at it, consider our unconscious mind. When we make a choice that has any emotional factor then we are not coming from a place of complete impartiality, we are coming from a place of our own internal programming and perspective. This programming will be based on everything in our past so we are not making an impartial choice; we are being directed from what we already believe to be true.
I like to refer to the philosophical concept of Plato's Cave so if you don't know of it take a look at this easy explanation. Philosophyzer's explanation of Platos cave
We believe there are 2 things you can chose to listen to within yourself: Ego & higher self (true self). Ego comes from the voice within but will sound or feel more like a desperate need whereas higher self will come from a place of desire (which feels natural, Not urgent).
Also we look at like this. It's the ability to challenge your own beliefs no matter how strongly you believe them to be true. This can be one of the hardest things to do because as you probably have experienced, it can get very emotional and fearful. Just think of a time when you got annoyed when someone has challenged a belief you held.
There is no right and there is no wrong.
If you say you don't have free will, is that like saying you are a victim of your own life? Everything just happens to me and controls me. Boo hooh hooh, poor me, lol
I (Jamie) used to come be in this place for most of my life but now of course I help others to make peace with memories of those kind of experiences.
One thought to leave you with is this. When we get angry or annoyed it's because something is not going our way. The next time you get angry or annoyed by someone else's opinion does this mean you believe they should not be allowed to use free will and should just agree with your way?
Authors: Jamie Edkins & Victoria Cottam