I'm sorry your t sounds so invalidating around your struggles. It must feel so lonely going there for support and coming out feeling like you are constantly failing...

Sometimes even the best-intentioned t's just don't mesh well. With a limited pool of resources, do you think it might be worth trying to talk to t about how invalidated you feel? There's always going to be someone whose "had it worse", but that doesn't really change the fact that your history is causing you problems. Maybe ask t what their intentions are in reminding you to be grateful? Or reminding t that one can be grateful it wasn't worse and still be hurt by what it was?

If that's not something you either feel comfortable doing, or think it won't help, perhaps talking to gp about another referral might be a good idea. Current trends in competent trauma treatment (at least for the us) include validating your feelings and experiences rather than negating your response...