misaki
Dreamer
My worst bad habit is always not finishing what I start. I have the tendency to have what I call "creative ADD" in which I get distracted easily by newer, shinier ideas. So I have a slew of unfinished manuscripts.
Lengthy exposition seems to be a common problem in fantasy fiction, even by professionals. I know it's important to establish your world, but I've noticed some writers (Steve Erikson or China Mieville) who don't really explain their worlds very much. They just jump right into it and you just have to go along. I like that style better. I get tired of opening up fantasy books with reams of historical knowledge and magic rules without a hint of a main character in sight.
That would be a bad habit that I'm glad I kicked. Some people like doing that though. Cheers to them.
I also have the bad habit of "internally editing" almost everything I do. That way, it makes it difficult to continue with a story when I am constantly saying "well, that doesn't make much sense." Some people spends years and years writing something before they finally just give up and throw it away because it doesn't fit their perfect vision. Just write and worry about editing when you're finished. Not to say just write a bunch of crap, but don't scrutinize every aspect of your own writing. It makes writing tedious for you in the long haul.
Another bad habit I kicked. Yay!
There's also the phrase "killing your darlings." Some people become so in love with their concepts and characters that they don't recognize when it's not working for the overall story. So they keep trying to shoehorn something that doesn't belong. Don't be afraid to kill or maim a character you love. Don't be afraid to take chunks of manuscript and toss them out. It's fine. No one has ever died from taking something out of a story. Least I don't think...
Bad habit three that I kicked.
Just some food for thought. May not help you much, but these habits really slowed me down over the years.
Oh gosh! I have 'creative ADD' as well, hahaha! I unfortunately haven't learnt how to drop this habit yet, so therefore I have many ideas floating around and no completed manuscripts *sigh*.