I might be an exception here but I have never worked on a team with more than three developers and / or five people. Still we could manage to get the job done (somehow).
Is there a software development process which fits this ‘extreme’ scenario? And, if you work as a standalone programmer is there something you can adapt to your daily life to make it more predicatable, coherent, documented and still get the job done?
The agile methodologies are a good starting point because, imho, they are better suited for small groups.
As for keeping your personal working pace I’d recommend a method based on TODO lists and some tool like Task2Gather. You might want to look at GTD, too.
Things I would never give up even for a team of me: