Hi Shea
I am agrophobic too, have been for 4 years now. Severe avoidance like you have done, stopped traveling and needing a safe person is agrophobic.
I am currently doing CBT therapy, I wont take meds, going the herb route, meditation, breathing exercises, and keeping a journal so I can identify and work to change my negative thinking are helping me.
I can go some places with a safe person. Working on getting out on my own is tough.
I suggest that you read "Hope and Help For Your Nerves, and "Simple Effective Treatment of Agrophobia" by Dr. Claire Weekes. The "anxiety and phobia workbook" by bourne are great also.
There is a light at the end of the tunnel. If you work to identify your triggers and change your thoughts there is a way back to you.