If you believe in God, then anything is possible. If you believe in God, then you must believe that He really is who He says He is. If He’s really the Creator of all things, then He’s more powerful than you can imagine, and He’s on your side.
If you can get your head around that, then what you pray is a done deal. For assuredly, I say to you that whoever says to this mountain, be removed and be cast into the sea and does not doubt in his heart, but believes that those things that he says will be done, he will have whatever he asks. Therefore I say to you, whatever things you ask when you pray, believe that you receive them and you will have them. (Mark 11: 23-24)
Is God for real or not? If He is, then pray for the impossible and watch it happen. Don’t watch because you have no idea if it will happen or not, expect your answer like you expect the sun to come up. Your faith can change everything. Trust God to be who He says He is. Doubt is a lie of the enemy. Faith is the doorway to heaven.