I just want to cry!

I've been working on and off on this quilt for almost 2 years. I hate it. I dread working on it. It's a pain in the butt and I'm fed up with it. I have 90 million other projects I want to work on, but feel like I can't until I finish this stupid quilt. It was promised to my MIL and FIL over 18 months ago. I just feel like such a failure with this stupid thing.