Nah, people dream every night. They just don't remember it at all sometimes.
Depends how much sleep you get. You need at least 4 hours of sleep I think to go into REM sleep for the rest of the sleep, though I do think you go in a cycle where you have 20 minutes of REM sleep during the first four hours. I can't remember shit all from my psychology classes.
"Stop feeling sorry for yourself, find the silver lining and get to work with the same belief, same drive and same conviction as ever."