[TheTarquin]

I'm not sure there's anything one could say about focus/productivity that's particular to software engineers. When it comes right down to it, the sort of work we do is susceptible to the same procrastination pitfalls as any other knowledge worker, and so it can be avoided in the same ways.

The most helpful advice I've gotten on productivity has come from Merlin Mann of 43Folders (and other projects), and he mostly writes about writing.