Prayer brings us to God
The deepest power of prayer is not a technique or a set of perfect words. It is access to God himself. Jesus taught his disciples to begin by addressing God as their Father, which means prayer starts with belonging, reverence and trust, not panic or performance (Matthew 6:9).
You can come as you are. The Psalms include praise, confusion, grief, anger, gratitude and desperate cries for help. God is not put off by an honest heart. He already knows what you need, yet he invites you to bring those needs to him (Matthew 6:8).
After this manner therefore pray ye: Our Father which art in heaven, Hallowed be thy name.
God hears and responds
Scripture speaks plainly of God hearing prayer. John says believers can have confidence as they ask according to God's will, because God hears them (1 John 5:14). Sometimes his answer is a changed circumstance. At other times it is strength to endure, wisdom for a decision, or people who arrive with timely care.
James points to the prayer of a righteous person as having real effect (James 5:16). That does not mean only unusually holy people may pray. It means prayer matters, and a life turned towards God matters too. Elijah's prayers affected a whole nation, yet James stresses that Elijah was human like us (James 5:17-18).
Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.
Prayer changes us too
Prayer does not only ask God to change things around us. It also changes how we carry what is happening. Paul urged anxious Christians in Philippi to bring every concern to God with prayer and thanksgiving. He promised God's peace would guard their hearts and minds in Christ Jesus (Philippians 4:6-7).
That peace is not pretending trouble has disappeared. Paul wrote those words from imprisonment. Prayer can make room for steady courage in a hard place, because it turns our attention from what we cannot control to the God who sees us.
Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God. And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus.
Prayer is trust, not control
It can hurt when you pray earnestly and the outcome you wanted does not come. Jesus himself prayed in Gethsemane with deep distress, asking for another way if possible, while yielding himself to the Father's will (Luke 22:42-44). Faithful prayer can include both a bold request and a surrendered heart.
So pray specifically. Ask for healing, daily provision, reconciliation, direction and courage. Keep asking, as Jesus encouraged his followers to do (Matthew 7:7-8). Then leave room for God's wisdom, timing and answer. Prayer is powerful because God is powerful, and because he lovingly draws ordinary people close to himself.