Career Advice for Programmers (YOW 2013)

Since I have a tendency to bang on every now and again about how we, as developers, could do better in managing our careers (for example, by creating CVs that don't suck, and by staying ahead of the curve), Dave Thomas asked me to speak for a mere 50 minutes on the subject at GOTO Aarhus, a talk I wasn't enormously happy with as there was no way to cover a lifetime of hard-fought experience in such a short time. Dave seemed to like something in it though, as he gave me the opportunity to present the topic again at YOW last December, and this time I think I managed to distill the important points into the (still ridiculously short) time allotted.

Please give me any feedback you have.

I recognise there are many many more topics I could cover, so I'd better start making a list. Suggestions?