Here's what I do to try to deal with those jitters. I'm sure I'm not alone on some of these things.
8:02am - First alarm goes off
8:47am - Finally decide to get out of bed after 10 snooze hits
8:49am - Shower, but don't shave. I never shave on game days
9:01am - Mess around on the internet for a bit, watch some hockey highlights from the night before
9:17am - Grab a quick breakfast, usually eggs and toast, bacon if i'm lucky, OJ and water
9:30am - Go to classes (depending on the day)
12:00pm - Classes end
12:31pm - Lunch. Usually a LOT of carbs and protein, and a TON of water
1:00pm - lay down in bed, watch Yes Dear or The King of Queens, eventually fall asleep for a nap
3:02pm - First alarm goes off
3:32pm - Finally get out of bed after 7 snooze hits
3:33pm - Mess around on the internet again, usually watch some hockey clips or read hockey articles. For me, these days are all about hockey
3:49pm - Do something physical like walk, run, or hit the bike for a few minutes
4:13pm - Look up the opponent on the internet. Player stats, game results, etc.
4:24pm - Quick rinse in the shower
5:00pm - Dinner with the teammates. I generally will eat 2 pieces of pizza, 2 hard boiled eggs, a banana, and a bagel with peanut butter, with a ton of water. I always grab at least 2 more bananas to go, for before and during the game
5:43pm - Relax on my bed while listening to pre-game tunes
6:15pm - Shower. I find that showering helps to relax me on game days. Which is why I do it 3 times before I leave and once more at the rink 30 minutes before warmups.
6:28pm - Get my suit on. Look good, feel good, play good. Also pack what I need for the game
6:43pm - Start walking to my car. I like to be at the rink at least 2 hours before the game to prepare myself.
I have found that this is generally the best way for me to keep myself relaxed on the day of the game. Nevermind the fact that I visualize about 5o different scenarios on the ice in my mind over and over and try to prepare to how I will respond. I try to keep this routine the same almost every game. Those that know me know I am superstitious to a fault.
More tomorrow. Time to rest. Game tomorrow night (Will follow the protocol above).