In Matthew 6, Jesus said to his disciples, "Do not worry and say, 'What are we to eat?' or 'What are we to drink?' or 'What are we to wear?' Seek first the kingdom of God and his righteousness, and these things will be given you besides." Similarly, once in union with God, you don't need to "worry" about what to ask from God anymore, for he knows and will give you exactly what you need.