Boredom?

As I try to focus on almost anything in my life, I seem to have to learn about it anew and today I feel that not only is my life a constantly shifting seascape but I am suddenly aware that it is constantly changing in colour.

A gorgeous, vibrant, never caught the woman sitting still, friend of mine today suggested that one of the important things to takle in marriage is the boredom. !!!???
My brain is still !!!???
I'm struggling to imagine the possibility of boredom having the chance to settle in. Depression, anger, resentment, guilt, all often callers.
Perhaps you'd have to be constantly happy in order to get bored with it.
Perhaps I'm keeping myself so full and busy and challenged in denial of boredom?