My father is not taking care of himself or his finances. Making very poor decisions about buying things and starting to tell my sister lots of tales. He will tell her one thing and tell me completely the opposite. We believe he wrecked his car and oh what a tale he is telling about that- says dropped it off for service and when he returned it was all dented in says they did it. How do we start the process? He has not yet been to a Dr. to be diagnosed with dementia but I believe that is very possible. We have hinted around to him to maybe sell the house and go to assisted living to make his life easier. His reaction was I will live and die in my house I am not going anywhere. Need suggestions on what to do.