Step One

One of the quickest and easiest things I tell people to do to get more control of their dog is to pick up the toys! All those toys are not your dog's toys they are yours. By putting them somewhere that your dog can't reach them you create an environment where a. they seem more exciting when the dog does have them, b. a situation where your dog must ask you to give him things. That creates a perfect opportunity for training.
1. Put toys away
2. When you come home from a walk offer your dog a toy but first ask him to sit.
3. Later maybe trade a toy for a bone or treat or another better toy
4. Make sure to pick up toys after an hour of play.
5. As your dog begins to sit more readily you can ask for more challenging commands to receive a toy.

By having the control of the toys in a positive way (They are my toys but I'm more then happy to let you play with them if you do "this" for me) you create a world where your dog will look to you for things.

Many times people find their dogs will play with the toys more once they pick them up. Because the toys are no longer available anytime they become more exciting and valuable when the toys are available.