One example of someone who integrated his soul is the one you know as Jesus. Several other ascended masters have done the same. I think a lot of people would agree that the being you know as Jesus really could do almost anything he put his mind to. Indeed, he could and can.
As Jesus said, everyone can potentially reach the level that he did. That said, this is not very easy. An intermediate step is just asking your soul every day what it wants you to do, by thinking or saying: “my soul, what should I do today?” Only answers that arise immediately are from your soul. Your soul will answer in your regular inner voice, but the answer will come from your soul.
If you consistently ask this question and consistently keep doing what your soul tells you to, then over time you will integrate your soul more and more, and you will become more and more powerful. In time, the separation between what you want and what your soul wants will vanish. For me, there is no difference between what I want and what my soul wants. The so-called part of me that’s not my soul, just wants to follow the director’s script, because I know that this is best for both myself as well as the people around me