Myths may be helpful but they are not ultimate. The proposition that Jesus lived and died and came back from the dead in real time and standard bodily space is of an entirely different order of reality than myth. And Paul nearly had apoplexy in 1 Corinthians 15 over the report that some members of that congregation doubted the resurrection. And this, as I understand it, is the heart of the matter. We are real.
Time is real.
Pain is real. Death is real. And this, as I understand it, is the Good News. And when you get that, then you live a life of joy. Not a life without pain, but a life, with or without pain, of joy.