At 60, he embarked on making "Psycho." Seemingly shaken by how the world was writing him off as over, Hitchcock allowed the film to meander. It took the friendship of his wife, played by Helen Mirren, to edit it into the brilliant piece of art we saw in the theatres.
Hopkins seemed more intent to capture this period of self doubt than to meander around Hitchcock's well-known disturbed personality. Mirren's restraint also pushed the focus on the crisis of confidence, bypassing the underlying nuttiness.
This is an especially inspirational film for Baby Boomers struggling against an age-biased society which would prefer if we just went away.