One quote:

"Marketing guru and agent of change Seth Godin writes that for your company to do more, sometimes you need to do less! Stop trying to be all things to all people (or customers), and focus (in your life and in your work) on your core strengths. Your business (and probably your sanity) are likely to improve."

I'm reading great Stephen R. Covey's Seven Habits Of Highly Effective People book. I think Covey would say exactly the same :) Yes, this is obvious! But we have to change our habits to become more effective. Focus on the most important things is the key. I like it.