By Paul Kirby
BBC News
Less than a week after former Grand Slam tennis champion Boris Becker was freed after serving seven and a half months in a UK jail, he has spoken of his loneliness, his fears and the lessons he learned behind bars.
In a lengthy and at times emotional one-on-one German TV interview, he revealed he had learned a hard, painful and very expensive lesson and rediscovered the person he once was: "But the whole experience also taught me something important and good. And some things happen for a good reason.