Watch out for these career-derailing missteps

1. Sending inappropriate e-mail

Where most office workers get into trouble is with the over-hasty e-mail reply.

2. Putting down co-workers

If word gets to your boss that you're bad-mouthing your co-workers to the customers, you could be in big trouble.
It's a much better idea to maintain a united company front when dealing with the customer. Resolve the issue with your IT colleague privately.

3. Contradicting the boss in public

5. Burning bridges when you resign

Bass said he emphasized that he was leaving for positive rather than negative reasons.
He also stressed the importance of leaving with a good reputation and a record of solid accomplishments.
When you leave, keep things as gracious as you can. When you make the Big Announcement, stress the advantages of the new job, not the shortcomings of the current one. Conversely, come up with reasons to be grateful to have worked at the latter, but be sincere and don't make things up.
If you learned something from your boss or co-workers, let them know. Even if you had difficulties with someone

Technical employees spend 80% of their time on core business and 20% on projects of their own choosing. That 20% time has produced phenomenal products, including Gmail, AdSense and Google News. When you have creative people and you make this part of the job description, it's a great fit.