How to discipline

Question
Hi,
My dog is very stubborn.  She is a 10 month old yorki poo.  She was spayed about two months ago.  She is very submissive with other dogs, but she is not submissive with us.  She barks for attention.  She doesn't come when we call her unless we have a treat, because she likes to be chased.  She mouths quite a bit to play.  I try to tell her no and close her mouth, but it doesn't seem to be working.  She barks when we leave her in the kitchen.  I don't know how to get her to stop barking.  She wants to be near us all the time which I understand, but I can't have her by me constantly.  She is getting the hang of housebreaking, but she still has accidents.  I just feel that I don't know how to discipline her or communicate no to her.  It feels like she doesn't respect me.  I take her on walks with a leash a lot.  I want her to walk in front of me, so I can see her and keep an eye on her.  I have read this is bad, because the she is leading...but I don't want her right beside me.  My husband and I walk her together, so it is best for her to be out in front of us.  I was making her sit every time she got a treat or food.  These things don't seem to establish dominance.  How can I discipline her when she is behaving badly?  
Thank you.

Answer
Well, first of all, your dog is not being stubborn - she simply doesn't understand what you want her to do, plus she is at an age where she would normally become more independent of you anyway.  Stop thinking how to be "dominant" or how to "discipline" and instead, think how to be a "leader" and how to "train" or "teach".  You have multiple issues that can be addressed successfully in a good positive training class, and that's my first advice - to go and find one (www.ipdta.org and www.apdt.com have trainer listings - be careful at APDT, as not all the listed trainers are positive or clicker trainers.  I would not use any trainer that doesn't understand operant conditioning, or any that use leash corrections - it just isn't necessary, and it's no fun for the dog or the humans who want to be kind to their dog, despite the fact that they want it to behave.  I suspect that you may have given her reinforcement, or attention, for barking, even if you thought you were disciplining her, so now she expects to be able to make you come and pay attention to her by barking.  The simplest solution (buy ear plugs) is to do nothing when she barks, and wait for her to stop on her own.  When she does, wait about 3-4 seconds, then say "yes" or click (www.clickertraining.com; www.clickerlessons.com are two sites that explain this technique) and toss her a treat.  
As to the housetraining, problems in this area are almost always due to the humans not supervising the dog when the dog is out of its crate, or scolding the dog for mistakes (sometimes, they learn to be fearful of urinating in front of people, so they go off and hide it).  
It really doesn't matter if your dog is leading or not, what matters is whether she listens to you if you give her a cue to do something else, such as sit, down, leave it, come, etc.  
Many people are well intentioned, but they have never really understood the differences in the way humans and dogs perceive the world.  If I could recommend two books to every new dog owner, they would be:
"The Culture Clash" by Jean Donaldson
"Clicking With Your Dog" by Peggy Tillman (step by step clicker training in pictures)
Another useful and inexpensive resource:
"Way to Go - How to Housetrain a Dog of Any Age" by Patricia McConnell
All are available at amazon or at dogwise.com