No. Soul is not self. These are opposite of each other. For more clarification, soul, as you said it is the task of all to get in touch with their soul. Why? Coz soul knows everything, the ultimate reality, soul has no other wish except Lord. Soul is like a guest from Lord in our body.Body! Captured by self, who always want to live on earth but the soul always want to get back towards the lord. Mind is the attribute of Soul.
You asked “who is ringmaster in this circus?” it’s a very good question indeed! Well i like to explain it with an example but besides example i have to say that all things work together.
Your body is like a county/city/country/world/universe

better word for the sake of example is city. But indeed every person is a sample of universe indeed a universe itself, anyway.
Who is the ringmaster?!? So your body is a city, where you appointed a governor which is self. This governor is very very greedy! And greediness leads many bad qualities as well u know. You have a prime minister which is your mind. This P.M always gives suggestions and clear you against the governor. Body parts like legs and arms are your economical and financial sectors. Eyes and ears are information sectors. Anger is a Police head. If you don’t keep the P.H under your control it will destroy each n everything. You are the king and I mean you as Heart. Heart is the king heart is the ringmaster. Everyone feel happiness and pleasure to obey the heart. If Heart orders then no one deny him. That king will be successful who listen to his P.M, always have an eye on governor and appoint anger on both of them. These all are necessary for his government so handle them nicely. Hint: Governor can be trained and trimmed through knowledge easily.
So heart is like a court/place as explained in my respected teacher explanation as well. I once again request you to read the article coz i know my knowlegde is far low than my teachers.
And thank you very much that I took a lot of time of yours.