Reincarnating is a painful process that only Gifted Ones
can achieve because their souls never depart the Retroverse.
To do so, the individual must first die (HELP DEATH). Then,
he must get reincarnated by a druid with that spell (HELP
SPELL REINCARNATION). It usually is better to have a look
out for a druid first before dying, so the Gifted One that
chose to take this fate doesn't have to wait.
  This is the only manner in which one can pick a new race,
rechoose a guild (thus erasing the guilds and race one
previously belonged to), and otherwise 'wipe the slate clean.'
This is not true in all cases, as the character still keeps
his name and his equipment (NOTE: Any non-autoloading items,
such as unthreaded gear, will not survive the reincarnation
process! Newbie-eq is technically not autoloading, as you
get a fresh set each boot) and still acts the same. From 
an RP perspective, it doesn't usually take long for others
to figure out who the character was.
  Reincarnation also means a whole new set of guild dues
for the appropriate new guild, and new costs for everything
(unless the reincee energizes PE in his new guild to get
guild credit, or asks a specially trained druid to convert
PE to "any credit", which will be valid to be spent in
any guild, including secondaries and tertiariy guilds. As
long as reinc-exp and AND guild credit are there, the
training doesn't cost gold).
  Reincarnation is not without its penalties, individuals
who reincarnate forget some of their past memories (a side-
effect of the traumatic death and reincarnation into a new
body), and thus lose a measure of experience points. The
amount of loss varies from person to person.

See also:  "help spell reincarnation"
    "help primal energy"
    "help guild credit"
    "help spell transform primal energy"
    "help skill study akashic records"
    "help force reincarnation"