In 2019 I went through 11 months of divorce proceedings. So, in 2020 I had to get the land and house ready to sell including digging a well. No well, no sell because my water was coming across family land. It seemed overwhelming and I am just now recovering after finding another place for myself and all that goes into moving to another state.
During these times my daugther said "dad, just do what you can today". As best as I could. this is what I have done. I found the dread and fear to be worse than actually accomplising the task.
The divorce was accomplished through mediation successfully, the land and house sold for my asking price, The well was successful at 900 feet, I moved to the neighborhood I dreamed of living, yada, yada, yada. I just did what I could on that day. Little by little all got accomplished.
One concept that I caught during the process of living in the moment. Not a meditation type. but paying attenton to my surroundings, my thoughts, and my activites. It might just be to enjoy the smoke as it rises from your pipe. If you do this your life will be enriched.
My sincere condolences regarding your father's illness. Please try to find some peace in doing what you can and not concerning yourself with things beyond yout abilites. Enjoy your breath, you family, and make the changes to improve whatever relationships that you can. Forgiviness does not mean you become friends, it just means you tell them they don't owe you anything. I read the book The Shack four times. There may be something there for you.