Holy Orders is the sacrament through which the mission entrusted by Christ to his apostles continues to be exercised in the Church until the end of time: thus it is the sacrament of apostolic ministry. It includes three degrees: episcopate, presbyterate, and diaconate. (CC 1536)

If you are thinking that you may be called to Ordination to the Preisthood or Permanent Diaconate please find more information at the link below.