Here's one definition of mindfulness I like :
"Mindfulness is a quality of gentle presence. Mindfulness is the capacity to be present with what is going on here and now, without judgement or resistance, without evasion or analysis. It is a willingness to experience without reservation what is happening in our lives in the present. It is the practice of radical acceptance."
So what that means is that even when things aren't all peaches and cream we develop the abllity to accept that what is, is.
Hypochondriac, some believe that a higher power is needed to lift the desire.