I have this problem. It's an ongoing thing. I'll have two or three ideas for really big, really complex posts, and they'll stew and stew while I try to figure out the best way to write them, and in the meantime other, smaller posts will not get written 'cause I'm thinking about the big ones.
Maybe there'll be a big one in the next day or two. Maybe not. Right now all I have is a picture of Doug and a shopping cart.