My greatest strength is that no matter what novel I plan on doing, materials always come from my head which I can easily place and replace any part and easily make any plot into a what I write. Even if I lack any details I made, I can just use the internet for gathering the details and added them to my vocabulary. So, no matter what novel I plan on tackling, any genres I want to try or even create out of thin air, materials are already provided and only needed my brain capacity to unload any of them into my writing style.
I would put procrastination as my weakness but on a serious note....
My greatest weakness as well,I have two which makes my brain capacity into obselete. I have short term memory and short attention span. Whenever I try to start becoming creative, i need my brain to remember the materials I gathered inside my head but unable to completely use them due to my brain completely forgetting everything I know. And to top it all off, everytime I could gather my thoughts, I have short term memory that completely negates any chance of me remembering what ideas I need to do any stuff. Basically a cycle of forgetting, remembering, forgetting again what am I doing, short circuit and fall in a deep state of forgetting who I actually am, restart myself anf begin to gather my thoughts, remembering something and repeat.
And no, I am not kidding that I would actually short circuit as I once to argue with a person about his life choices and because of how airheaded he was and how dense he is, my brain fried some of my brain cells(which weren't a lot to begin with) and ended up becoming daze for a few minutes of being in an endless loop of forgetting my own existance and remembering who I was. Which is the reason why I kinda write as to gather my thoughts before I actually go braindead from losing too many of my braincells that I could even be sleep deprived when I had slep for more than 12 hours.