My budgie is making good progress I think, and thanks to the people who gave advice, I haven't given him up. He accepts food from my hand easily and is getting better at target training. He won't go outside the cage and he still is scared of my hand (stays frozen) but for a bird that came from the pet store unhandles he is making good progress. I hope to believe that it is not impossible to tame him. I know every bird is different, but how did you guys tame your bird?