Otto is 92 years of age. He lives in his own home with daily support from a community based aged care service to assist with personal care, housework and shopping. He is gradually losing his hearing, but frequently misplaces his hearing aid; he is losing his eyesight and is unable to see objects clearly at a distance or to read small print; he had a minor stroke last year which left him with a speech impediment; and when he went to renew his driver's licence this year he was not assessed as fit to drive. His nieces Jess and Melissa have been trying to persuade Otto to move into residential aged care. They are his closest relatives and are often called on to deal with minor emergencies and crises. Otto does not want to move and is refusing to cooperate with the ACAT assessment organised by Jess and Melissa. He is very angry and wants to prevent them from making decisions about his life. Jess and Melissa have contacted their state guardianship and administration authority to ask about having a guardian appointed to decide where Otto should live. He wants to continue to live in his own home and to die in his own home. Otto has approached an aged care advocacy service asking for support. Explain the potential barriers to Otto's capacity to advocate for himself and describe the resources a worker could use to address each potential barrier.