How do we focus on stress for the first noble truth?

Do we focus on suffering as the suffering we're experiencing in the present moment or do we focus on suffering how the Buddha and Sariputta put forth and analyzed the four noble truths like: "Now what, friends, is the noble truth of stress? Birth is stressful, aging is stressful, death is stressful; sorrow, lamentation, pain, distress, & despair are stressful; not getting what is wanted is stressful. In short, the five clinging-aggregates are stressful." Do we just have to notice the actual mental experience of suffering as cause by craving or can we notice all its different manifestations, like the stress of the body or the stress of impatience?