I haven't really had anyone to talk to about things for a long time either. I also rarely feel like my problems are worth bothering anyone over. I usually just keep things to myself, and trust that things will work out in the end.

However, I did recently have a problem I needed to discuss with people, so I just started talking. I asked for advice from people I had began to feel distanced from, and from people I barely knew. It was actually very rewarding. I don't know if people felt I was bothering them with my problems or not, but nobody made it feel that way, and talking to people again really helped me feel closer to them, even if just for a little while. But more importantly, it helped me figure out who I really could turn to again in the future.

As for people not understanding... I don't think anyone really understands anyone else anyway. I've yet to find someone who knows exactly how I feel, or can understand me completely with just a few words. Even the people I'm closest to sometimes misinterpret, or need more description than I am capable of giving. That's normal. Sometimes though, those minor misunderstandings are important in bringing new views and opinions on a subject, or making you look at things in a way you didn't before.

Just find someone to talk to, and talk. Even if it doesn't feel right at first, it will soon enough. There are lots of people here who are willing to listen. Myself included.