Hi Windseeker,
I'm sorry for lonliess/sadness you are experiencing.....I can relate to to it. It sounds like you have been given some good advice from others on this forum.
I just wanted to agree with what Scott in Fenton said, and let you know we are here for you whenever you need to talk, vent, rant, cry, laugh etc.
I know from experience how lonely and isolating this injury can be. Family, friends just can't quite understand. I have heard similar things to what your dad said, by well-meaning family members and it hurts to hear.....even if it's not true.
Depression can also be made worse by certain medicines (or sometimes lack of medicine) lack of sleep, lack of nutrients, fluctuations in brain chemicals etc. I am 8 months into recovery and just now getting referred to a specialist for the depression. It is hard to ask for help sometimes....but it beats the alternative.
Sending good thoughts your way. Please keep us posted on how you are doing.