You do know that even a simple little prayer asking for what you want but accepting God’s will is the best choice. Copy Jesus’ prayer in Gethsemane, ask for what you want and then add ‘but not my will but yours be done’ and mean it. Then ask instead with all your novenas for courage, fortitude, strength, faith and trust in God. Those are worth praying earnestly for. For all of us there is nothing wrong with asking for what you want persistently but do remember that God will give you what you need and what is best for you (the you is plural - meaning all mankind). Like little lady said novenas aren’t magic and prayers are not a do this get this activity, I am sure you know that… but be weary of thinking like that as could border on superstitious behaviour, which leads from God not to him. God bless you. I am sorry you have such a problem, trust in God and the miracle will be yours even if it’s not the miracle you expect.