Region and style have a lot to do with a question or sentence being 'correct'. Isn't that what you wanted all along? or Isn't that what you have wanted all along? --Either are 'correct', but adding the word 'have' makes the question a bit more formal. It wasn't good from the start. or It haven't been good from the start. Correction--It hasn't been good from the start.

both are ok. in second part it would need to be 'it hasn't been good from the start'