Allow yourself to understand that the relaxation you experience when you "go with the flow" is not "giving up control", it is "taking control". It is just that the natural control you already contain doesn't meet with resistance. Our civilization has only been taught to see "control" when it contains resistance.
In other words,"I'm in control because I can feel it resisting me". This gives the illusion that if there is no resistance, there is no control. In fact, it is the complete lack of resistance that let's you know you have arrived at your center of perfect peace, where all possible realities are equal, and it is easy to choose the one you prefer, because no reality has any more importance than any other one. There is no defensive "I'd better do this, or else

There is only the understanding of the thing that needs to be taught to every child on the planet, and that is the knowledge that every single individual on this planet is already as powerful as he or she needs to be to create any reality desired, without having to hurt yourself, or anyone else, to get it. That's how powerful you are.