Yes, the Lord’s Prayer is so good. The disciples came to Jesus and asked him to teach them to pray, and He said, when you pray, say this… (Luke 11, beginning in verse 1). Like everyone I have had rough spots in my life. Slowly, meditatively praying the Lord’s Prayer has brought me much peace, and reconciliation with Almighty God and my fellows. I then usually slowly and meditatively pray three Hail Mary’s, three Fatima Prayers, and three Glory Be’s. Almost always this leads me to a place of meditation and a “bubbling up”, as of living water, of personal prayers of gratitude (thanking God’s providential grace that I am in the one, holy, catholic, and apostolic Church, and that I have been “grafted into” the Communion of Saints).
For purity, think on the Holy Virgin Mary. Devote yourself to her, whom God chose to be His great Mother. Ask for her intercession as often as you have spare time. Oh, the love that she has, and her ardent desire to bring us before the blessed Fruit of her womb: her Most Holy Son!
May God richly bless you! (P. S., I also pray the “old” Act of Hope often. As we become familiar with the deposit of Faith we can cling to by the use of prayer, we are enlivened and enriched. St. Paul said, “Pray ceaselessly”, this means, be willing to live in a spirit of speaking to Almighty God, Father, Son, and Holy Spirit, the great Mother of God, and the Apostles and Saints. If you have a patron saint, make appeals to him or her. Example: “St. Clare, pray for me.” St. James’ Epistle has this encouragement, “The effectual, fervent prayer of the righteous availeth much.”)