I agree let it sit for at least 2 weeks but I give mine an extra week also. Actually sometimes I leave it for a month.
I know how you feel when I first starting brewing I stared at it, opened it constantly, and took readings everyday. I just couldn't resist I was fascinated by the entire process and dammit I wanted to try it so bad. Now I realize I was doing more harm then anything just opening it up to possible infections from opening and closing the lid and removing samples everyday for the hydrometer.
So my words of wisdom are... let it be