There are many reasons a person may be disqualified to serve as a guardian. Some of the more usual reasons an applicant is disqualified as the guardian of a person or of a person’s estate are that the applicant owes the proposed ward money, has a felony conviction, or is too inexperienced to manage another person.Texas Probate Code section 681. Additionally, the proposed ward may specifically disqualify a person through a written document signed before the need for a guardian arises. Texas Probate Code section 679.