It's Shinnosuke.
Last week, I read your post and decided to comment.
It's a little late, but let me comment.
My bad habits? Of course I have. I have many, many bad habits because I'm a human.
First, like your habits, I may be poor at doing assignments or something in well-planed ways.
I mean I tend to be lazy and start to do those things very late.
I really want to improve this habit, but it's so difficult probably because we originally have this tendency somewhere in our parts.
Nevertheless, sometimes I complete some assignments in a well-planed way and spend the day before their deadlines very easily, so I don't know well which tendency I have.
Second, more seriously, I study only my favorite subjects.
As some of you know, I've got a so bad, too bad score in one class, and it is now so hard not to fail.
This is because of one of my habits.
I would often be said from my homeroom teacher in high school "Stop studying English and study Japanese!!!"
That's why I envy someone who can spend equal time in everything.
Third,
Forth,
Fifth,...
It lasts almost forever, so I stop here.