"I have been reluctant to set goals which include some sort of feed back or reaction from my wife."
This is what DBing is all about. You have to set goals.
"I have seen some of these written by others but i feel that my wife is too unpredictable for me to make proper assessment of what is working and not working."
That's why it's all trial and error. Not everything you do is going to work, but you never know until you try. This is just your fear talking. Do you honestly think that everyone who made goals had a "predictable" spouse?
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.