if you like driving your prix then keep it. i like driving mine because it will go through a ton of snow, it gets decent mileage, it is fairly fast for what it is, and fixing it is cheaper than any other car ive ever had.
if youre ready to move on then go for it, but if youre moving on because you dont want to fix it then youre going to end up spending more money on something else that may not be something you really want.