hi and welcome to beyond blue.
I am saddened you feel you are unable to talk a professional about what you are going through. I am guessing your experiences with your mother and daughters father have "taught" you it is better to say nothing and/or safer.
First, let me applaud your courage in seeking out therapy and for reaching out with your question. It is no small thing to acknowledge that one needs help,
I am going to go out on a limb and ask what stops from opening up? Is it a lack of trust in the person you are speaking to? Or do yo think you would feel judged by the person you would speak to? Past experiences too painful?
It is OK to tell the person you are speaking to that something is too hard to speak about. I have done something similar with my psychologist. And so we took it in smaller steps. It also takes time to build a relationship with any therapist who will guide you through the process.
For someone who has difficulty opening up... you did a good job here. I will also listen to you