Condition
unique is that any person whatever his condition will return to the normal state (number 7) we call this level 7 as a normal / standard. Those with low levels of happiness (level 1-5) are depressed, or disabled, or their families are affected by cancer, or even their parents die, as sadly as their lives will after a while return to level 7, otherwise the very happy 8-10) like lottery winners, newly married / childbearing, as much as their life will also return to level 7 after a while.