Sweet dreams

I see dead people. Well, at least I dream about them... I have always had very strange and vivid dreams. Sometimes Horrible. Through out my life this has been a huge issue that can mean many sleepless nights. Through out my divorce, the dreams have gotten worse. I wake up not knowing where I am, not being able to breathe, crying, or worse- sometimes screaming. I also dream about dead people on a regular basis. ( I know-superfreak) My dad can tell you a story about when I was about 8 telling him that his sister( who has been dead for over 30 years and I never met) came to see me last night. I have had dreams of my great grandma, my grandfather (who I also never met), my stepdads mother, my exhusbands grandad,a girl from my past that killed herself, and several close friends. People that know me are used to this. My exhusband got to where he would not let me talk about my dreams- they freaked him out. I learned a trick to focus on what I want to dream about before I fall asleep- then my dream will take off in the direction I want it to go- but it doesn't always work. Last night was a good one. Get a load of this: First let me set the stage. My grandma is 77 years old and in extremely poor health. She smoked for over 50 years but recently quit(amazing, isn't it??) . So last night I go to bed on the couch because I had my kids. I fall aleep and begin to dream.......In my dream I wake up smelling smoke. Cigerette smoke. So I sit up and wonder if I forgot to put my cigerette out(still dreaming..). I wander into my living room, and there at my table sits my Grandma Boom. She is smoking. I can see all of this as a third person. What I mean by that is I can see myself as well- and I am wearing exactly what I had been wearing before I went to bed- my blue fleece pants, my blue hoodie, and my hair was in pigtails. So I am watching my grandma smoke and she says "so it turns out that you can smoke in heaven, isn't that just bizare??". then she starts laughing a wonderful laugh. I can still hear it clear as a bell. There is a bit more but this is getting long. I am interested to know what peoples take is on this. Is this a premanition of sorts??? Any advise on dreaming?? I wish that I could controll my dreams a little better. The nightmares are the worst. Just wondering...