what's the true answer to loneliness

i have lived alone 20 years now..in a little one bedroom flat...i lost contact with the 1 or 2 friends i had from the distant past..and now i'm virtually alone in the world apart from my beloved mum and dad...i'm closest to my mum and ive not seen her for a long while...my mum lives far from me now but we speak everyday on the phone 4 times daily...m mum is elderly now but she is doing ok for her age.....she used to travel down to see me and stay but i'm not certain when she'll be up again..

i live as a shut in and get very lonely....as the society we live in nowdays, no one comes knocking at your door.....i don't go out because i get very paranoid, anxious and stressed out...so i stay indoors where i feel safe and happy.....but then i get lonely..i think sometimes the loneless will drive me mad.

what can you do when you are truly lonely??