My UFO's are because I didn't know how to proceed (and some because I lost interest). I've learned to go onto another project and learn new things, then revisit my UFO's. One quilt took 5 years of starts and stops. It's a favorite now-all finished. I didn't get frustrated, just recognized I needed more info and relaxed into the process.
By the way, if you're a beginner, you'll learn with less frustration by picking the easy patterns, and joining a sew group. Many LQS have UFO or open sew days on their schedule. I never did take my own advise and always chose not one step beyond, but way beyond my abilities. I also give myself permission to never finish a quilt and donate it at guild exchange day.
Are we having fun yet?