Do you want to sound more like a native speaker? Or do you want to keep most of your original sound and just make a few small changes? Or maybe you’re a British actor working on an American accent.
The idea of “Chosen Voice” is that you choose your goals.
You can change your accent. If you speak English as a foreign language, you can change your pronunciation—no matter how long you’ve been speaking English. You can sound more fluent and speak with less effort. If you’re a native speaker of British or Australian English, you can learn American pronunciation.