Taphophobia - Being Buried Alive

Just making that title really makes me panic and think its happening to me, but for some reason this has been a phobia of mine for as long as I can remember and it's my worst one. I can't hear it, see it, etc or I just start hallucinating its happening to me. As I type this I keep like freaking out cause I can feel it happening and I want to scream. Does anyone else have this? How have you coped with it? I really want to try and get over this, but as a phobia I have no idea if I ever can...