DAY 245 --- Where Do Dreams (night-time) Come From?

Where do dreams come from?  Not the kind we have been talking about, dreaming of going on a mission and such.  But where do dreams come from that you have while sleeping?  At times they just pop up about someone we haven't seen for many years.  Then there are those nightmares, those that wake us up and cause us to perspire.  Sometimes they come from input experienced during the previous day. 

Last night I dreamed three different dreams I was going on a mission, alone.  I dreamed, woke up, went back to sleep and dreamed again I was going on a mission and repeated it again.  THREE TIMES.  They were different dreams, but all about me going on a mission.  Some times, in the Book of Mormon, Lehi dreamed a dream, and Nephi, recording it said, "In other words he saw a vision."  I know I am paraphrasing it.  But I know that at times we are given dreams as visions, or as inspiration.

Was mine last night a vision?  In one of the dreams I remember talking to Bonnie and telling her that I was confused because the Church doesn't often call married men to go on a mission without their wife.  I was packing, getting ready to go and felt it strange.  We were discussing what she was going to do while I was gone.  We were accepting the call and preparing for it.  Crazy.

The next dream, I remember leaving our singing practice one night and said to a fellow singer, "See you in two years."  He laughed and I added, "No, you think I am kidding, right?"  He stopped laughing and we parted ways.  I felt sorrow that I would not be singing in this years concerts.

In the third dream, I was excited about going, and started thinking about having a companion of 20 years old, being my senior, telling me, slightly older than 20, what to do.  I knew I was well versed in Spanish, and I probably knew more than he did, but he was going to be my senior.  I was excited, but wondered how that would work out, or would it.  I remember it being the day before I was leaving, still wondering if it was "right" and what it meant, leaving my Bonnie, and my family...

Now, can anyone tell me if that was a nightmare, or a vision, or somewhere in between!  Where to dreams come from, and what, if anything, do they mean?  Or in a popular movie, someone asked if a dream was "an undigested potato?"  Potato, vision, nightmare, just entertainment,  or something to blog about? Wish I knew.