Most people are too hard on themselves. Ok, so you're not a big fan. It's time to put on your big girl panties and deal with the issue at hand. What did you learn from this?
1. Square your blocks before you sew them.
2. When thinking about a design, do you want the colors to blend or contrast?
3. Take your time, use your seam ripper if needed.
4. Fix what you can, don't fret over what you cant.
5. Very few quilts are easy.
Finally, I see nothing wrong with your quilt. Like some other QB members have said in the past, take a few steps back, and look at it again. It looks nice to me.
You have a couple of choices about what to do with this quilt. Keep it or donate it. Either way you will learn from it, for sure. At the risk of sounding corny, pm me if you want to donate it to someone who you wont run the risk of seeing it again. I will gladly take it off your hands...I'll even pay shipping!