Rescind Resignation?

I made a rash decison last week and gave resignation for a difficult job I took a year ago they told me I'm dong a nice job but it's a lot. Plus I'm having major personal relationship issue. I don't have new job have to income because of relationship issues given the current job market and my age it's almost impossible find something new. I'm just dealing with a lot of personal things. I want to rescind the resignation I'm not sure this common but need a job has anyone done this before? I'm worried.