Prophecies are good and very helpful, but scripture says prophecy may fail us(1Corinthians13vs8).
It is not the destiny of prophecies to fail but different things could make it actually not come to pass.
So what is the remedy? Get a Word to back it up
The Word cannot fail you, so back up those prophecies with the Word.
And that is it.
N:B:I do not hold any resentment towards Prophets or prophecies, thankfully I still do appreciate them when they come.