My father thinks I don't care about him or no one cares about him even though there are a lot of people around him that love him and he just doesn't want to hear it ?

Actions speak louder than words. If your father doesn't want to hear it, then show it. Make him feel like someone cares instead of only hearing it. Try asking some questions too. Why does he feel this way or what can I do to help? Getting to the root of the problem will help solve the situation.

Often times, how we think others feel is a reflection of how WE feel inside. Our own feelings are often so powerful and deep, that we think others are feeling them towards us as well. This is called projecting. Odds are, he doesn't feel great about himself or who he is. He doesn't have love for himself, so he thinks that those around him don't have love for him either. Sticking by him, continually telling him you love him, and helping him build up his self confidence is a great way to help mend this situation. Best of luck!

That's a tough situation to deal with. :( It sounds like maybe he doesn't feel that he is worthy of love. Sometimes people feel like that because of experiences they've been through -- maybe he was not told he was loved, or he was told he wasn't loved, as a child. One way to counter this belief that people don't love him is to start accumulating evidence that people do love him. You can do this, or he can do it, or you both can. You could make a list with things like, "I know that ___ cares about me because they gave me a birthday cake. I know that ___ loves me because they wanted to spend time with me last Saturday, and we did ___ together." Etc.

There are people who even though many love them they do not feel it because their emotions are mixed. Try to talk to your father and let him know that you really love him. Actions are better than words. Make him feel that you are always by his side so that he can gradually see that someone cares for him. Show that you care and always remind yourself that your father's feelings are valid. Try to communicate with him. Understanding is the key. There may be a reason why he thinks you don't love him so try to communicate.

Keep showering him with love and appreciation, and encourage him to talk to a professional about why he feels this way