Is it ALWAYS my fault?

Hello everyone. I guess this site has been bitter sweet for me. As an ADHD guy who is just about to start as second marriage, I can't help but be discouraged by what I'm reading. It seems to me, that almost all of the conflict in relationships is attributed to the partner with ADHD. Can this be the case? I struggle with emotional impulsivity - outbursts that are both irrational and uncalled for. Is this the ONLY reason my marriage failed? It was certainly an ugly aspect of it, but up until now, I thought it was one ingredient in a large list of reasons we didn't make it. Now I feel like it's the only one. 

I really hope someone can shed some light on this as I am now very much considering not proceeding with my current situation. I can't bare the idea of being the reason my second marriage falters too.