I got Oscar as a puppy and trained him using standard positive re-enforcement techniques. He would do something I wanted (like potty outside) and this resulted in praise and treats. I would take time every day and sit on the floor "at his level" and issue a command, then when he did it, praise and treats. Stopping him from doing things that I didn't want him to do, usually involved a gentle "Nope" or in rare cases a very loud "NO!" followed by directing him to the right thing (say "NO!" at chewing shoes then giving him a chew toy after a few seconds). I say this to demonstrate, that I have some experience and success with positive reinforcement. Oscar is well trained happy, and well balanced dog.
Now we got Shalio, as a puppy. Oscar is still around. We have tried the same exact technique. And while she responds well 60% of the time, she is extremely stubborn. If she doesn't want to do a thing, then she won't. Not even for awesome treats like lunch meat. This is ok, not ideal, be we can simply try training during different times of the day, or in shorter sessions, after she is worn out from playing etc. till we find a time where she does want to follow the commands. However, once she decides she wants to do a thing, nothing short of physically stopping her and making it impossible will work. For example, like most young dogs she likes to chew paper. If she decides that she want's that paper in the trash, then nothing short of taking it away from her, and putting it out of reach (or putting her in her crate) is going to stop her.
The problem is that we are going through this phase where she "can't do anything right". When we try to play, she will get distracted by something and end up in trouble. When we try to groom, she gets distracted and in trouble. When we try to sleep, she gets distracted and in trouble. There is almost no chance for positive reinforcement.
In short, if she decides that she wants to do something, then she is either going to do it, or push so far that you have no choice but to isolate her from what she wants to do, and she has a habit of only wanting to do things that get her in trouble.
What other modifications can we make so that she has at least some time doing good things, instead of being in a situation where she is either asleep or in trouble?