Daniel Radcliffe speaks to Fresh Air about why he was chosen to play Allen Ginsberg in Kill Your Darlings:
[The director John Krokidas] saw something in Allen’s situation in life — which was that of somebody trying to figure out who they are creatively — and he saw, I think, a parallel of that in my life, as somebody who had come out of one thing, obviously Potter, which I’m very known for … and trying to establish myself outside of that. Also, John and I are aware that most people in any kind of creative industry generally, I think, have an operating system that runs between the extremes of self doubt, or anxiety, and ambition, and that’s definitely something Allen has. And I think that’s something I probably have in common with him.
photo still of Radcliffe as Ginsberg via Kill Your Darlings