I came across this passage in ‘The Ghost’ by Robert Harris. It struck a chord with me, because I think it applies to writing scientific papers as well as ghost writing. Here it is, an observation by the ghost writer who is main character of the book:
Of all human activities, writing is the one for which it is easiest to find excuses not to begin […] I had learned over the years to ignore them all, and simply to start.
I find this very sound advice. Maybe I should print it in a biggish font and put it next to my work computer?