I feel like I can't function properly in society, am I being irrational?

I don't feel part of a community, part of a group. Even thought I live with my family, I am unhappy. I have tolerated living with new family members who I didn't get on with, and I forced myself to see them in a good light, when I really didn't like them. I feel like I can't do anything, I feel disabled and I don't feel joyous. I feel so trapped. Please help me.