2001 Jeep Cherokee

My jeep started it about 6months ago. I would be going down the and the engine would just die no warning. I would pull over put it in park and it allways started rite back. And it wouldnt do it very often. But in the last few weeks its gotten a lot worse. It would stop and take longer to start when it did start it would only run for a few minutes then die again. But now it wont start at all.