Glue, tape, string. You use everything you can to make sure the pieces stick. To make sure that things stay together. You mend. You fix. You hold everything in place. You pretend there aren't any pieces missing when everything doesn't fit right. You cover the out of shape parts with the good ones, so that they can't be seen. You paint over the cracks and the holes and the tape. You pretend it's all hunky dory.
Or at least you try.