I have too much stuff

I have spent the past 2 days going threw stuff. My house looks like a bomb went off in it. LOL
I just do not know how much room I have of what I can take or what to get rid of. I'm going crazy :(
I'm going to try to have a yard sale this week end but there is a 50% chance of rain on Saturday and  the next week end is Easter :( ... BUT I'm getting there