In some cases, a power of attorney can be revoked or overridden. This can be done to protect the person in situations where they’re being abused, neglected, or taken advantage of by their appointed agent.
A court-appointed guardian can request the power of attorney status be revoked from the agent. Any interested party can also make this request by petitioning the court. Interested parties typically include family members or close friends.
However, as long as you are considered competent, you can end a power of attorney arrangement at any time and for any reason. You don’t need anyone else to petition on your behalf for this.