What Makes us Bad Writers?

It seems that nowadays, everyone is talking about how to be a good writer. Well, they have good reason for doing such things. I think about it all the time, actually. What can I do to make that sentence better? How can I improve my writing? How can I improve my characters?

However, I feel that some of this can be slightly opinion based. I think that in order to find out what we need to better ourselves as writers, we need to figure out what exactly makes us bad writers. Well, here is my