Here are some quotes about not being good enough:

- "The worst feeling knowing that you’re not good enough for someone you try so hard to impress."
- "The worst feeling in the world is knowing you did the best you could, and it still wasn’t good enough."
- "I felt so much, that I started to feel nothing."
- "Whatever arises, love that." – Matt Kahn
- "I am only one, but I am one. I cannot do everything, but I can do something. And because I cannot do everything, I will not refuse to do something that I can do."
- "I’m not good enough."
- "I’m a disappointment to everyone."
- "I wish that I was what you wanted."
- "I’m sorry I’m not what you wanted."
- "Fed up with not being good enough."
- "Stop thinking you aren’t good enough."
- "Stupid me thinking I was good enough."
- "I will never be good enough for anyone."
- "The only person that deserves a special place in your life is someone that never made you feel like you were an option in theirs."

I hope these quotes help you in some way. Let me know if there's anything else I can help you with.