Thank you for sharing your struggle so honestly and for asking for prayer. Your request is heard with care and compassion, and I want to respond as helpfully as I can from Scripture.
The most important foundation for prayer is relationship with God. Jesus taught us to pray saying Our Father, and that relationship is what makes prayer real and effective. That relationship comes only through Jesus Christ. If a person has not yet put their trust in Him, the one prayer God most wants to hear is, God be merciful to me, a sinner. That prayer opens the door to forgiveness and new life, and then prayer becomes a living communion with a Father who loves you. If you have not yet done so, I encourage you to turn to Jesus in simple faith, confess your need for Him, and ask Him to be your Savior and Lord. If you already belong to Him, you can come confidently as His child.
It is also important to understand what prayer is for. Prayer is not a way to make God do what we want, or to inform Him of something He does not know. Your Father knows what you need before you ask. Prayer is not meant to change God's mind or wear Him down. Prayer is meant to bring us into agreement with God's will so that He can do in and through us what He has desired to do all along, without forcing our will. For that reason the wisest and most peaceful prayer we can pray is, Lord, have Your way in my life, let Your perfect will be done. That does not mean we stop bringing our specific needs to Him. We do bring them, honestly and fervently, but we bring them with open hands, trusting His wisdom and love more than our own wishes.
You asked for a powerful prayer for healing from schizophrenia and for help with acting. God does care about both your health and the desires of your heart, and the Bible shows us that Jesus healed the sick and that the early church prayed for the sick and saw God work. At the same time, Scripture also shows that God sometimes answers prayer for healing with a direct healing, and sometimes answers with sustaining grace. The apostle Paul prayed three times for a deep affliction to be taken away, and the Lord answered, My grace is sufficient for you, my strength is made perfect in weakness. That reminds us that even when healing is not immediate or complete, God is present to strengthen, comfort, and carry us, and His grace is never insufficient.
I also want to encourage you toward what might be called the prayer of entrance rather than only a prayer for deliverance. It is natural to want relief from distressing symptoms, and it is right to ask God for healing. Yet the deeper need is for the presence of Jesus Himself in your life. When His light enters, darkness must leave, because light and darkness cannot live together. If we seek only relief without welcoming the Healer Himself to dwell in us and fill every part of our lives, we can remain empty and vulnerable. Invite Christ to fill your heart and mind fully, to be Lord over your thoughts, your health, your work, and your future.
Prayer does not have to be long or worded in a special way to be powerful. The prayers recorded in the Bible are often very short. What matters is a sincere heart crying out in faith. The Bible says the fervent, heartfelt prayer of a righteous person is effective and accomplishes much. That righteousness is not our own goodness, but the righteousness God gives us through faith in Jesus. And Jesus promised that when two or three agree together on earth about anything according to His will, He hears. So I join my faith with yours now.
Prayer also includes worship and thanksgiving, not only asking. Even in hardship, we can lift up God's greatness, thank Him for His mercy, and end our prayers with praise, trusting that He has heard and will act according to what is best. Difficulties often drive us to our knees, and that itself can become a gift, as God meets us there with assurance and comfort.
Finally, prayer does not replace wise and practical care. In the Bible, prayer always went hand in hand with action. Prayer is not an excuse to do nothing, but it comes first and then leads to prudent steps. For a condition like schizophrenia, please continue to seek and follow good medical and mental health care, take counsel from trusted doctors, and involve supportive family or friends and a healthy local church community where you can be known and cared for. God often works through these means as part of His provision. If you are experiencing distressing thoughts or voices that urge harm to yourself or others, please reach out right away for help to a trusted person, pastor, counselor, or medical professional.
Concerning your desire to act in film, bring that desire to the Lord as well. Ask Him to guide you and to shape your desires to fit His purposes. Ask whether this path will help you grow in Christ, serve others, and walk in purity and truth. God delights to lead His children step by step when we seek His will above our own.
Let me pray for you now in agreement:
Father, I come to You in the name of Jesus Christ and lift up this dear one to You. You know the struggle with schizophrenia, every thought, every fear, every sleepless night. You know the desire to be well and to use gifts in acting. Lord, be merciful and draw this heart close to You. If there has not yet been a clear turning to Jesus for salvation, I pray for that new birth today. Fill this life with Your presence, Your light, and Your peace. I ask for Your healing touch according to Your perfect will, and where healing is a process, pour out sufficient grace and daily strength. Guide doctors and helpers, give wisdom for treatment, and surround this person with caring support. Lead in the matter of work and acting, open the right doors and close the wrong ones, and let Your will be done. Teach how to pray continually, to worship, to give thanks, and to trust You with praise even while waiting. In Jesus name, Amen.
Please keep praying, keep seeking the Lord daily in His Word, and keep walking with those who can support you practically and spiritually. God hears the sincere cry of His children, and He is faithful.