Complex sentence: During his stint in the National Wrestling Federation, Damien worked with Paul Heyman and played a part in starting Hayman's career as a commentator before he became a manager for Damien & D.C. Drake in the National Wrestling Federation as Paul E. Dangerously during the 1980s.
Split into simpler sentences: During his stint in the National Wrestling Federation, Damien worked with Paul Heyman and played a part in starting Heyman's career as a commentator. Heyman later became a manager for Damien & D.C. Drake in the National Wrestling Federation as Paul E. Dangerously during the 1980s.