I Can't Seem to Write Anything, Alright.

First off: yes, you can! 

When I first started writing fanfiction six years ago and then poetry, I felt like I wasn't that good. Yeah, it's no secret. Whatever you start at first won't always be good, so don't be disappointed when it happens to come out that way.

Whether you're blogging, starting a book, publishing online, writing poetry, etc. Any of those things require much patience with practice, so don't ever say that you can't do it. Instead, replace it with an "I can." I can do it. You may not think that you're good at it, but just keep writing and then wait for a year and see if you're not any good at it. Best of all--keep practicing and look back in a couple years to see what you've accomplished. 

So if you think that you're not good at anything--think again. Talents are worth a million bucks. If you keep with them and write every day, then you can improve. If you let it go, you become rusty and lose the talent. So if this is what you want to do, keep it up. It doesn't matter what you're writing, just write something!