My son gave me the permission to accept my success.
Meaning of the quote
The quote means that Gary Burghoff's son helped him feel comfortable with his own achievements. Sometimes, it can be hard for people to accept when they are successful, but Burghoff's son gave him the confidence to be proud of his accomplishments.

About Gary Burghoff
Gary Burghoff is an American actor best known for his roles as Charlie Brown in the musical “You’re a Good Man, Charlie Brown” and as Corporal Walter Eugene “Radar” O’Reilly in the film M*A*S*H and the TV series. He was also a regular on the popular game show Match Game from 1974 to 1979.