Rev 5:8 And when he had taken the book, the four beasts and four and twenty elders fell down before the Lamb, having every one of them harps, and golden vials full of odours, which are the prayers of saints.
Though we may feel at times as if our prayers don't make it through the ceiling, rest assured, they are precious to Heaven and are preserved for safe keeping.
No less than golden vials in glory contain your prayers of praise, supplication and intercession. We are not asked to let our requests be made known unto God so that they might be stowed away in some obscure filing cabinet. We may forget our petitions, but in heaven they are well-looked-after.
In fact, our prayers have an aromatic fragrance to them, a perfumed quality which surrounds the Throne with the odorous reminders of our needs.
So, don't stop praying. Believer's prayers are precious to God and are always answered.