Although you've spent time with your Guild and may have potentially built up friendships with them, the time may come when you must leave. This tutorial will show you how easy it is to leave your Guild and join another.
Mention your desire to leave to the Guild Master. He may find you to be a valuable member of the team and try to work things out in your favor.
Type "/gquit" to leave your Guild if the drama becomes too great and you must leave.
Look for invitations to join another Guild. The World of Warcraft Guild recruitment forums are one resource for finding a new guild. By looking at some of the linked guild sites, you'll be able to gain more of a sense of the guild's membership and find one that will be a better fit.