What are you doing?

I am trying to make it my mantra to "do one thing and finish it".

So when hubby asked me a minute ago "what are you doing?", I sighed.  What was I doing?

1. writing a letter to clients
2. checking e-mail
3. looking t blogs
4. checking my work to-do list

Yup, I was doing all the above. And now I'm writing a blog post.  And I never seem to finish anything.