Complex sentence: John Gray (born 1951 in Houston, Texas) is an American relationship consultant, lecturer and author of sixteen books on relationships and personal growth, including the 1992 book "Men Are from Mars, Women Are from Venus".
Split into simpler sentences: John Gray (born 1951 in Houston, Texas) is an American relationship counselor, lecturer and author. He has written sixteen books on relationships and personal growth, including his 1992 book "Men Are from Mars, Women Are from Venus".