Most people react to circumstances.
You're better than that. You are bettering your marriage and therefore, you're going to respond.
To respond to a situation, personality, circumstance, etc you have to go into that scenario/conversation with complete humility (not humiliation), complete self-awareness, and a plan for if it goes poorly or isn't up to your expectations. How will you respond more maturely? How will you show composure? How will you go in with the outcome in mind and demonstrate what you need to in order to achieve that outcome? You have to believe when you go in that this scenario/conversation will be a 10/10- even if it's only on YOUR side.
How will you work to respond more this week than reacting?