You might be better off picking a series of blocks first ... then fitting a meaningful story to them. QuiltersCache and the Bachman book are both great resources.
Write down any block that could have any remote possibilty of fitting into a story - for example I went through QuiltersCache A-F blocks and came up with the following .... Butter & Eggs, Captain of His Ship, Cathy's Campfire, Constellation, Coxey's Camp, Duck Tracks, Darting Minnows, Ebb Tide, Eight Hands Round, End of the Day, Everybody's Favorite, Fair Play, Four Leaf Clover.
I can convert these to a story as follows: On Sunday the Captain of His Ship took us camping to Coxey's Camp. With all Eight Hands Round we were able to get the tents erected. Later, follwing the Duck Tracks, we made our way to the river and at Ebb Tide were able to see the Darting Minnows. At the End of the Day we sat around Cathy's Campfire and sang Everyody's Favorite songs.
I used most of them.
Of course you want to make your's personal ... but if you make a long enough list of various blocks you should be able to come up with some personal references.