Dreams and other things....

I can't sleep. Well I do sleep,but it's always interrupted. Lot's of times by dreams. Some times by some furry creature that wants to let out.
But when I wake up, it is so hard to fall back asleep. Some nights that "falling back" never comes. In the night all these thoughts come uninvited. Random crazy thoughts some real, some just weird! Some nights the voice in my head is very critical indeed.It lets me know of every damn failure I have ever made. I remember things as a kid that I forgot in my daytime life. Neighbors friends I had when I was little. Pets that I had. Some good and some not good memories.
The night hours also play with my self-esteem. It's like only negative thoughts come through at night.If it's nightmares that wake me it's usually a very realistic one. Sometimes a nightmare is something that occurred in real life. One time when I was a kid a neighbor of my grandmothers hung himself in his basement,sadly I got to see him hanging there just before the police arrived.
 My brother's death. A storm we had . Sometimes it's terrifying, and I can't move when I wake up . I still see the images in my head for several hours.  
The worse are the ones that feel like premonitions (I have had those rarely).That type of dream can stay with me during the day hours. Not that it is a constant thought in my head but more of a flash here and there thinking about it. This happens if I've dream something has happened to one of my kids. I have dreamed that someone they know hurt them physically and I saw it but couldn't do anything. I have woke up with a name in my head just to find out that person died in real life,or was hurt. People come in my head I haven't thought of in years.
Don't get me wrong I have perfectly lovely dreams too. Dreams where I am  at a beautiful beach,watching the waves,or walking in the sand. These dreams are also vivid,and waking from them leaves me feeling a little sad.I just hate how not sleeping makes me feel.Somedays I feel like I can't function at all. Anyone else not sleeping?