Unfortunately, I have a good number of bad habits associated with my sketchbooks. I am a little too self conscious about the stuff I put in them, being fully aware that people will ask to look at them. The advantage of keeping a sketchbook is you have a creative space to work in free from the pressures of having a "polished" piece, something that can be exhibited. Sketchbooks, for me, represent a return to that sort of stream of consciousness drawing we did when we were kids. At least, I believe it should be.But then you have this scenario:
Person: What do you do?
You: I'm an artist.
Person: Oh, cool. Do you have a sketchbook? May I see it?
(They flip through the book, seeing a couple recognizable drawings, most of it meaningless scribbles)
Worrying about stuff like this, though, seems to get in the way of the creative process. It's important to have a pressure free space to work in. It helps the finished work become more sincere. It is important to have a space to practice your craft with wild abandon, somewhere where fear a failure does not inhibit your ability to just get down and work. Whenever my dad, an artist himself, would look at one of my drawings, he would nod approvingly and say something to the effect of "That's great, son. Do about 5000 more of those and you'll be about right."
The moral of the story; draw. A lot. No matter what.