To get a Gozatchi you nedd your Tama to be a 2nd generation or more. Then take perfect care of him, but keep his max discipline to 2 bars. He will then turn into a Kinokamatchi then a Young Mimitchi After that keep one happy heart empty. Then TADAAA!!! A Gozatchi!
1st you must have a Oniotchi or young mimitchi, then neglect him like hell but make sure you don't get 4 direct neglects ( i learnt that from nazochi ) lol. <_< and then you should have a gozarutchi when ure tama turns 7!