Stuck in a rut.

How to start off a rant on writers block better than using a cliche in the title? Correction not really writers block but more associated around the neighborhood of writers overly critical, impatient, and lazy habits. I have been working on a few things and everything that comes from it I feel the need to strike out and write crap underneath. I have had moments in which I felt that I couldn't do wrong, moments when inspiration was spent looking for a pen, and days of drought. I go to attack the paper with a thought and find a mirage. It is laughing and recedes into the blankness of the page as wind kicks sand in my face.