I am in a relationship I value with someone who I respect and care very much about, and I also have some abandonment issues/BPD issues from traumas I experienced as a kid/teen/young adult. 

Sometimes I feel those traumas flaring up and causing me to behave irrationally in my relationship-- Like becoming overly emotional or angry because of my partner's unintentional tone or word choice. 

I have been trying to use mindfulness to control my reactions and avoid escalating my negative reactions/emotions. The key is realizing when I'm triggered and then I say to myself "Hey! This is an opportunity for mindfulness!" And I get pretty excited and happy that I caught my reaction and can control my response.

I'm wondering if anyone else here has similar experiences-- what are your best practices?