Before You Surrender. . .
Have you talked to your veterinarian?
If your dog is acting differently or expressing behaviors you haven't seen from him/her before, try consulting with your veterinarian to see if there is something going on internally or medication that could help.
Have you reached out to a trainer?
A trainer is a great place to start. There are many different types of trainers that focus on different types of things and use different types of techniques. It's best to do some research to determine what type of trainer is best for your dog and the issues you're wanting to focus on.
Have you reached out to the breeder or shelter/rescue you adopted your dog from?
Some breeders may have resources or contacts that may be able to help. If you adopted your dog from a shelter or rescue some may require that you return the dog to them. A lot of shelters also have resources that may be able to help!