Sometimes I just don't feel understood

When I bring things up to people, I just feel like they don't understand where I am coming from and what I think. Sometimes I feel like when I bring something up, they just don't care to listen and just kind of avoid it. I hate that feeling. I try to get some help with stuff, and I just feel ignored!!! It's not a great feeling. I just wish people would understand what is going on and how I feel instead of dismissing my feelings....