[robotpony]

Side projects and life-long learning are the only way to stay relevant.

Stop feeling guilty for not finishing side projects (only finish the good ones).

Adapt not just your skills, but your learning techniques (you're not in college any more, and the learning landscape is evolving quickly).

Don't be overly loyal to your company, at least more than is rational (their loyalty to you is limited to shareholder return and their basic humanity). This isn't to say you should bail early (as you won't learn or ship anything real), but value your own career over the number of years you stay with one company.

Look ahead regularly: where do you want to be in 5 years? It takes 5 years to get somewhere (like front-end, back-end, kernel dev, UI designer, etc.). As this question EVERY WEEK, and do something about it.

Make good habits: your habits are your learning and productivity, this includes the wetware (i.e., you).