This quote below is from a great 2003 interview in The Believer with the British analytic philosopher, Galen Strawson. His viewpoint on the existence of free will rings true and there doesn’t seem to be a credible opposing argument. If you know of one, please let me know where to find it.
THE BELIEVER: You start out your book Freedom and Belief by saying that there is no such thing as free will. What exactly do you mean by free will?
GALEN STRAWSON: I mean what nearly everyone means. Almost all human beings believe that they are free to choose what to do in such a way that they can be truly, genuinely responsible for their actions in the strongest possible sense—responsible period, responsible without any qualification, responsible sans phrase, responsible tout court, absolutely, radically, buck-stoppingly responsible; ultimately responsible, in a word—and so ultimately morally responsible when moral matters are at issue. Free will is the thing you have to have if you’re going to be responsible in this all-or-nothing way. That’s what I mean by free will. That’s what I think we haven’t got and can’t have.
In addition to clearly explaining Mr. Strawson’s argument, there is also discussion of meditation and a reference to Krishnamurti. Interesting.