Actually, I started therapy to find a way to not transition. I was terrified of the prospect. I still find it a bit scary.
I think everyone trans*, CIS, whatever, has side issues. For me, living in denial all my life, hiding who I am, serially re-inventing myself... that certainly contributed to the density of the dark cloud I came to live under. Therapy helped me a lot. Really, there is no "normal". My psychologist was ready to offer me the letter after a few months of therapy, but I held off for several years beyond that before I came to understand and accept that it would be my best option. So here I am, transitioning, still seeing my therapist regularly, still benefiting.