[Keith]

This looks to be very good advice for more advanced PDers who have the skills (through experience) to judge what projects will make a difference.

But a warning for less experienced PDers (like me!): Until you've developed some confidence and experience, the task of figuring out what to work on first can be overwhelming and easily lead to a state of 'analysis paralysis'.

For a novice PDer, it's often better to do "something... anything" than to get bogged down trying to figure out what to do first.

Note: This is really just a special case of the "Ready... Fire... Aim" principle (Steve, of course, already has a pretty good idea where to 'aim' because he's been 'firing' for many years now...).