[1] Tips for Productivity and Happiness at Work, a very good article wrotten by Matt Raible in his blog Raible Designs.

One of the most important catalysts for productivity is to be happy at your job. Besides that, some tips which could help to improve your productivity are

Write stuff down.

Quit reading e-mail and blogs.

Work on open source late at night, with a beer on your desk.

Work disconnected.

Listen to music while you work.

Work long hours on Monday and Tuesday.

Avoid meetings at all costs.

Sleep.

Work on something you’re passionate about.

He also give some general advice about jobs and careers.

If you’re not happy at work, quit.

Always try to be a contractor before a full-time employee.

Don’t work at a company with a two-week vacation policy.

Don’t travel if you have kids.

Ask for more responsibility.

Most things can be learned by reading.

Personally I really agree what Matt said. If you interested to learn more, read his blog.

Source from [2] Ralble Designs