 Quiet yourself down and even if you make a mistake you've been living your life like that till now anyways. The only difference is now you know that there is a material instance within you that is able to impulse the system so you can start to practice listening to it. Even if you make a mistake at least you know something now which you didn't know before. You just did not know this before and now you know it. So even if you get a wrong impulse and you have to go through pain because of that you keep on trying it's a sadhana, it's a practice and some people get it quite fast and some people take a while longer. It depends on your readiness to bend. Surrender means don't impose the ego on what the soul or the source is going to make you do. Just let it impulse you.