A lot to ponder maybe. First, can we ask how comfort relates to happiness as pointed out by Diana L. Pierce. I have always thought of comfort more so how it relates to my living conditions and with confrontations. And, then I think of the adage "Am I comfortable in my own skin?". Pondering I looked at the meaning for comfort. It points to freedom from pain or constraint. Also, easing feelings of grief or distress.
With the first I now think of tolerance. Or, how much does tolerance of pain increasing or decreasing affect my comfort? I am thinking now of when a boss is lecturing or correcting me. That can be an emotional pain. How much does tolerance affect my comfort? Do I feel constrained or loss of comfort? When the lecture is over do I feel comfort or does it continue emotionally, how long, and what relieves that?
And, then as quickly I think of when my legs are in pain - discomfort. I sit in my 'comfortable chair' and put my feet up. That is easing feelings of distress or I now have comfort.
So, to me what shapes comfort is pain and how to heal that . . .