Suffering (pain) is not a virtue.
Beware. Emotions/feelings can be as inauthentic and incorrect and misguided and misleading and unproductive and harmful as any bad idea.
In any event, just because yesterday was a bad day does not mean today should be a bad day.
Why “process emotions” at the expense of joy and contentment?
Think better thoughts. Do what makes today and tomorrow better.
You married poorly. How does trying to process emotions around a bad marital decision make today and tomorrow better?
Rather than feeling bad it is better to get the bad — including the bad people, bad thoughts, bad acts — out of your life. Keep what is bad in life at a distance physically and emotionally and out of your mind to the extent possible.
Instead figure out how to live the best life possible in your circumstances.