There's something about starting a new non-data writing project that always sucks. I do all the little things I need to get done for a while, all while knowing I'm like Wile E. Coyote with an Acme anvil suspended overhead. It's only a matter of time before the rope frays. Both a grant and a data paper have their motivations, but a review or book chapter? Where's the push or the urgency? Where is that feeling of wanting to get your cool shit out to the world as fast as possible? It's not there. Not quite the same feeling to wake up in the morning and think "Man, I can't wait to slog through the literature today to summarize the findings of others in a cohesive way!" Yes, I will be using examples from my lab as well, but the topic I am tackling is far too large for any one group to have a monopoly on.
So, the only way to approach this and get it done is a strict writing regimen of dedicated hours every day when nothing else happens. No interruptions, no meetings, just writing. I hate to have to do it like this, but it's the only way to stare this thing down and get it done. The deadline doesn't scare me and my co-author is a minor contributor, so there isn't even much peer-guilt. No, it's all about blunt force.