An endangered species is a species of organisms facing a very high risk of extinction. The phrase is used vaguely in common parlance for any species fitting this description, but its use by conservation biologists typically refers to those designated Endangered in the IUCN Red List, where it is the second most severe conservation status for wild populations, following Critically Endangered.
I measure my happiness 2 ways. 1  Through a (random and irregular) process of self reflection.  2 Catching myself being happy and remembering the last time I caught myself being happy and trying to determine the time between them.
1 Finding the humor in situations can also lead to happiness. 2  While there are times that require you to be serious, when it is appropriate, find a way to make light of a situation that would otherwise make you unhappy. 3  Maintaining your health is another way to achieve happiness.