Diamonds are nothing more than chunks of coal that stuck to their jobs.
Your flaws, no matter how hard you work to improve them, will never be as good as your strengths.
My favorite fruit is grapes. Because with grapes, you always get another chance. Cause, you know, if you have a crappy apple or a peach, you're stuck with that crappy piece of fruit. But if you have a crappy grape, no problem - just move on to the next. Grapes: The Fruit of Hope.
When you're stuck, and sure you've written absolutely garbage, force yourself to finish and then decide to fix or scrap it - or you will never know if you can.
I know several amazing people that move forward. Most of the time I don't even know about it. They just do it. They don't talk about it much. They just do it. Move forward. Seems easy as I am writing this out. It isn't. I find this to be a strength and I strive to move forward.
Everything around us moves forward. Winter leaves. Spring comes. The sun shines. The mind thinks; yes it does! Even when you think it thoughtless.
Go get yourself daffodils. I am drinking in their promise. Albeit it slowly.