I have a Catahoula Leopard dog who is VERY dominent and active. The most simple thing that I have done with her to get the biggest impact is that when I feed her she is not to eat until given permission. When told "bowl" she brings me her dish (not important but cute) I put the food in it and put it on the floor and put her in a sit/down stay or a wait and make her to sit there a moment before I tell her to take it.
She too comes off as dog agressive But is actually just "explaining the rules" before letting you into the pack... crates a lot of problems at the dog park when people come with their dogs at the gate and mine is frothing at the mouth barking and growling... Once they are in she is fine. She goes to doggie daycare every now and then too so she can play with other dogs.
She does pick up on my moods. If I am upset she will often get pica and eat anything. She also tends to "forget" she is house broken if I am upset. My vet gave her a low dose of valium for when she gets really stressed.
Another thing that can help if you are open to these kinds of things is the Bach Flower Remidies "Rescue Remidy"