My praying friend, continue to make known your desires to God in all things. ... Let Him decide whether you are to receive what you ask for or not.
God alone fully understands what each one of us needs; we make mistakes continually and pray for things which would be harmful to us if we received them. Afterwards we see our mistakes and realize that God is good and wise in not giving us these things, even though we plead ever so earnestly for them.