Take a deep breath and relax....just kidding.
What's you strength? Prose or music? Many popular songs through the years are written by teams of people. Elton John and Bernie Tarpin, Jerry Garcia and Robert Hunter, John Lennon and Paul McCartney, Mick Jagger and Keith Richards, Rodgers and Hammerstein, Holland-Dozer-Holland, on and on. Each side is an art form by itself. I suggested in another answer on a similar topic to check out "Tunesmith" a book written by Jimmy Webb a most successful Nashville songwriter that is well rounded in both areas. He describes the process in great detail.