Business partnership and guidance on how to get in touch with feelings/communication in a healthy way.

Hello: I have a business partner (we are developing a program together). She has her own business and I have my own and we are working on a program together. She has a very strong personality and seems to have a big ego and has to tell me “you are lucky to be in partnership with me”. I tend to “bow” down to her and lose my “light”. I need some guidance on how I can use the model on how to get super clear and be able to communicate in a productive way without losing my power. Any insights or direction to where I can learn? Thank you so much. Melissa