1.God has designed your body to heal itself to some degree.
If you have a minor cut, you can stick a Band-Aid on it and your body will heal itself. If God hadn't created our blood to clot, the entire human race would be dead! In His wisdom He gave us white blood cells to fight off diseases.
2.God uses medicine to heal us.
1 Tim 5:23 says, "Take a little wine for the sake of your stomach and your frequent ailments." Paul told Timothy to drink some wine for medicinal purposes to cure his stomach problems. God has given us the knowledge in our present day to develop medicines to treat all kinds of illnesses.
3.God uses doctors and surgeons to treat us.
Jesus said, "The sick have need of a physician" (Mark 2:17). Luke, who wrote the books of Luke and Acts, was also a physician (Col. 4:14). However, sometimes doctors aren't able to fix everything that's wrong. A woman in the Bible had a hemorrhage for twelve years and the physicians couldn't help her. She touched the cloak of Jesus and was healed. (See Mark 5:25-34). When the first three methods don't fix the problem, don't give up hope. God can heal supernaturally too.
4.God can heal through prayer.
James 5:16 says, "Confess your sins to one another, and pray for one another so that you may be healed." We may be holding unforgiveness or another wrong attitude in our hearts, which blocks the answer to our prayers. That's why we need to bring those hidden things to light by confessing them before we ask others to pray for us. God heals people through His mercy (see Matt. 20:30-31). When He answers your prayer, don't forget to thank Him!