"As you go through life, It’s a long long road, There’ll be joys and sorrows too, As we journey on, We will sing this song, For the boys in royal blue, We’re often partisan, We will journey on, Keep right on to the end of the road, Keep right on to the end, Though the way be long, Let your heart beat strong, Keep right on to the end, Though you’re tired and weary, Still journey on, ’til you come to your happy abode, Where all the love, you’ve been dreaming of will be there. WHERE? At the end of the road, Birmingham! Birmingham!"
Take away the specific references to the greatest football club on the planet, who have just been promoted to the Premiership, and the song applies to writers as well. We may be tired and weary but we have to journey on 'til we reach whatever our happy abode might be, whether it's a TV soap or a Hollywood movie or the West End or a Radio 4 series.