When you meditate, practice asana, or generally try to become more aware, you want to associate your practice with peace and quiet. We say we want our practice to be ‘zen’ without any understanding of what that might really mean. In short, we want our practice to be a pleasant experience.
But our work is to expand how much life we can contain and to reduce our reactivity to what we encounter. So we must constantly examine what sets us off and analyze our reaction.
Whatever comes up in meditation or other practices is grist for our mill. We have to acknowledge it, feel it, and see the circumstances that lead to our feeling this way. Only by doing so will we be liberated.