Procrastinating
Procrastination probably is one of my worst qualities as well 
Procrastination is putting things off and not doing them when you’re supposed to.
So for example, suppose I have to write an essay by some deadline. If I continuously delay writing the essay, then I’m procrastinating. So I might be watching videos on YouTube, learning new words on LingQ, or doing some activity that disrupts or delays the completion of some task.
I’ve read that there are many causes of procrastination. Laziness is probably what most people think of. But it is said that things like fear of failure can also cause people to procrastinate. haha… Go figure.