My head touches the roof. Help with seat height!!

Hi everyone! I know jack about cars, so I thought you all could help me out.I drive a 2009 Toyota Corolla -- nothing special, but it gets the job done. I find myself hitting the roof with the brim of my hat or even the top of my head hitting the roof!I've adjusted the seats every which way, but I use one of those back pillows and I can't find a way to sit up straight while driving without hitting the roof. If I bend my back, I'm fine, but that really hurts me after a while, especially because of all the heavy lifting I do at work.I'm short, too, but I figure some tall people have this problem. I've never installed aftermarket seats, but is it a possibility in a little Corolla, and could I install myself or should I go to a special place to get it done? via /r/cars http://ift.tt/2rTKKvu