Don't over commit.

Here's a scenario that is quite common in the workplace. I say, "I need this by the end of the week". You say, "Great. I will get that to you within the next 30 minutes."  Problem is, I don't need it within the next 30 minutes. I need it by the end of the week.  So, to me, between 30 minutes and end of the week is perfect.

So....why did you add this to your immediate to-do list? I didn't tell you to do that?  How many times are you doing this per day?

And more importantly, why are you doing this to yourself?

I have worked with - and calmed down - many people that feel compelled to over-commit themselves.  Their fear of not doing everything all at once gives the perception that their work ethic and ability might be questioned.

The danger in over-committing yourself is that, eventually, you truly will NOT be able to adhere to these self-imposed deadlines and you will appear to not be able to make true on your promises. At this point, not only will your work ethic be questioned, but your time-management skills, and even the trust from co-workers will falter.

So please, continue to be aggressive, and a hard worker, but please - be smart, be realistic, and don't over-commit.