One approach to 'career management' not mentioned here but that I think is non-obvious but helpful to you and to others is to help recruiters with referrals.

Now: I know recruiters are often the subject of a lot of mockery on HN, but referrals are a way to stay engaged and to look good for times (later) when you may need their help.

And any sincere efforts to help others find work is both rewarding and creates a good halo effect.

All good reminders, all hard to keep in mind :)