That depends on what one is trying to do, but the premise of liturgical prayer is so that our worship, congregationally and in private, is decent and in order, for many common applications prayers which date back to the Church Fathers are used, or other established forms. The Lord’s Prayer represents this par excellence, being the precise prayer given to us by our Lord, and is a prototypical prayer overall, from which we get the Christian litany of the Eastern and Anglican forms (a list of petitions), the Western Collect, or bidding prayer, and the Husoyo, an elaborate bidding prayer used in the West Syriac Rite consisting of a Proemion, or preface, a Sedro, a Husoyo, which is the petition, an Etro, or prayer over incense, and a Qolo, the function of which escapes me, but if a Collect is a tram, trolley or streetcar, Husoye are intercity express trains, serving a similiar purpose but much longer, more complex, and sung and chanted in one of the eight modes. In the West Syriac Rite they replaced most of the Litanies and other bidding prayers. But in all liturgies, the Lord’s Prayer holds a special place of honor. In the east, the Embolism (for thine is the power and the glory of the father and the son and the holy ghost, now and ever and unto the ages) is reserved to the celebrating priest or bishop, who sings it: everyone else stops at “forgive us our debts, as we forgive our debtors”).. The most common type of personal prayer is the Arrow Prayer. Examples include Kyrie Eleison, O God Make Speed to Save Us, O Lord Make Haste to Help Us, the Jesus Prayer (Lord Jesus Christ, Son of God, Have Mercy on Me, a Sinner) and the Ave Maria, all of which, and other varieties, are commendable. I do not like the Roman Catholic Rosary however; a superior Marian devotion using the Ave Maria and a special Lestovka (the leather counter used by Russian Old Believers and Old Rite churches, and by some people like myself who prefer it to the Chotchki, or Prayer Rope, which replaced it in Russia and is the standard elsewhere), is the Rule of St. Seraphim of Sarov, a Russian hermit from the turn of the 19th century who could be thought of as a St. Francis or St. Dominic of the East, although really he was closer to St. Anthony and St. Theodore the Stylite in terms of his ascetic severity, hermetic isolation, and pastoral care.