The difficult thing about prayer/faith, in terms of working miracles, is being able to 'believe' with as much certainty as God, that healing miracles are possible. This isn't just a belief in the idea of it, it means a 'faith' or a 'knowing', a sense of certainty and confidence, that God CAN heal and that he WILL heal, given the chance.
So if my own ability to accept and align with that truth is still weak, and I am not confident in this way, and I am still afraid to take the risk of immediate miracles, and if I'm still believing my own ego that I need to do something, or if I'm not convinced that Holy Spirit knows what he's doing (lol).... then these become blocks to love, and therefore blocks to miracles.
It's our task to learn to ditch listening to the ego and listen to God. To become convinced of and open minded about what he is capable of. Our task is also to remember love, to be willing to love, and to be open to extending love. There aren't any miracles without love. And so that means there's going to have to be personal growth, personal healing, and personal development in letting go of everything that opposes the miracle.
Here are some of the more pertinent Miracle Principles, which speak to the need to be coming from a rather 'high' place, aligned with God, open to love, following a period of "purification", dependent on our progress in forgiveness, free of fear, aligned with Holy Spirit, in a "miraculous state of mind". ...
3 - Miracles occur naturally as expressions of love.
7 - Miracles are everyone's right, but purification is necessary first.
11: Prayer is the medium of miracles.
14 - Miracles bear witness to truth.
19 - Miracles make minds one in God.
20 - Miracles reawaken the awareness that the spirit, not the body, is the altar of truth.
21 - Miracles are natural signs of forgiveness. Through miracles you accept God's forgiveness by extending it to others.
25 - Miracles are part of an interlocking chain of forgiveness which, when completed, is the Atonement.
26 - Miracles represent freedom from fear. Atoning means undoing - undoing fear is an essential part of the miracle.
27 - A miracle is a universal blessing from God through me to all my brothers.
28 - Miracles are a way of earning release from fear.
36 - Miracles are examples of right thinking.
38 - The Holy Spirit is the mechanism of miracles.
40 - The miracle acknowledges everyone as your brother and mine.
43 - Miracles arise from a miraculous state of mind, or a state of miracle-readiness.
44 - The miracle is an expression of an inner awareness of Christ and the acceptance of His Atonement.