Some people are naturally pessimistic and are happy being so. They view themselves as pragmatic and as having a better sense of reality. Then there are those of us who feel weighed down by negativity and wish that we could be more optimistic. This is completely possible.
The legend of the phoenix can actually be found in several belief systems. It can be traced back to ancient Egypt when it was then known as "Bennu" or Bynw", a symbol of the sun god Osiris. Osiris was resurrected to life from serving as ruler of the underworld.