I wonder if you started your therapist training to help yourself. I hear a lot of altruism in your explanation of why you felt drawn to this profession.
I used to work on a rape crisis line and the majority of the volunteer counsellors had experienced sexual violence themselves and wanted to be there for others. But even in that very limited capacity, I found that the desire to help and identifying with our callers wasn't enough.
You actually need to develop empathy for the experience of being in therapy, making oneself vulnerable, dealing with really hard feelings etc. Otherwise you can actually be quite harmful to your clients. It can't be studied! You actually need to do it.