Beyond your immediate reasons for seeing a therapist, there are other positives. Barring unusual circumstances, our minds will work to lower our stress levels, avoid conflict, etc. However, if we stay in that state, it will be very difficult for us to move forward. Potentially, being a trans person can lead to all sorts of upheavals in our lives. One of the things that a therapist can help with is provide some understanding as to what is going on and also help with maintaining focus on the things that need to be considered.
Unfortunately, isolation is prevalent in the trans community. That is why your therapist mentioned getting connected with support groups and building your network within the community. Knowing that there are others is an empowering thought!