We are to be the Body of Christ, going to those who are sick. The woman who had spent 12 years and all she had looking for healing just knew Jesus was what/who would heal her. God is the only one who will meet certain needs.
Sometimes we thing the issues we have only affect us. That is not so. For example, the woman was making all those she touched unclean in her attempt for healing. Sometimes he does not take the issue away, but gives us His grace instead. It is not about praying enough or asking just right. He wants people to pursue Him.