Try not to let his "black cloud" affect you. Learning to control your emotions is a valuable tool, not only in your marriage. I remind myself every day, "YOU are in control of how you feel. NOONE else can change my feelings."
Happiness, contentment, acceptance... They're all a choice.
When I get worked up I remind myself, "this too shall pass.". Anyone who's ever quit smoking knows the battle. The emotion and struggle becomes overwhelming and all consuming. But it passes. "This too shall pass. I am in control of how I feel."
M34 W35 S5 S2 T10 M6 on/off over the years including her A Recently- Nov 2015 bomb Nov 2015-Feb 2016 Reconciling Feb bomb March-April Reconciling May - bomb Mid-May I tell her I'm done