i prefer first to have a shower ,drink some cold water,then just keep your eyes closed and think about some good memorable events in your life or about your loving one and the moments with them.then your mind will get relaxed and engage in reading some good book or listen to good music .
I read a few pages of whatever fiction book I'm currently reading. I do this in bed with the lights out and with a flashlight. then I turn the flashlight out and lie back and think as little as possible.
I like to drink a cup of tea. My preferred tea is one I make of Chamomile (Matricaria recutita or Anthemis nobilis--German and Roman respectively), Catnip (Nepeta cataria), and Peppermint (Mentha piperita). It helps calm the nervous system and relax the body. It's not recommended if you are pregnant though. Taking slow, deep belly breaths helps as well.