I go out a-peak-hunting throughout winter and have a high success rate of reaching the summit (which I personally enjoy). Here are a few things that work for me - maybe they'll work for you, too.
1. Climb with good friends and solid partners. The stakes are high in the hills during the winter! Having at least a 3-pack of friends means a) trailbreakers b) checks and balances on route finding c) checks and balances on risk assessment d) laughs and good times. Breaking trail alone is just demoralizing and exhausting! It is suffering better shared with company you enjoy.
2. Weather conditions often result in getting shut-out from summits above 12,000 ft. That can get really frustrating if it happens weekend after weekend - waking up at 4:00 AM only to turn around 800 feet from the top, etc. If I find myself getting frustrated by "near misses" in the high country, I turn my attention to peaks below 12k to remind myself that I do this for fun.
3. Just like backcountry skiers have their powder stashes, find your own "sunshine and warm rock" stashes - places where you know you can get away from winter conditions if you want (without having to drive to the Utah border) and enjoy warmer temps, less snow, etc.
4. Always have a flask of Tuaca / Irish Mist / Rumple Minze / whatever, handy for long slogs (when the risks involved aren't too high, of course [straightforward route finding, no dicey scrambling, no avy slopes])such as during long slogs through crotch-high powder through the trees on some un-named 11er.
5. Remind myself that even when the going is tough-as-hell in the winter and the summits are elusive, I am out getting more done before 10:00 AM than a lot of folks back in the Springs do all day! I'm not watching TV, shopping at WalMart, drinking beer (until later...) or whatever. I'm out doing what I love, punishing myself in the hills, enjoying fantastic scenery and camaraderie, plus getting a great workout.
6. Escape every once and a while down to see my folks in Arizona and climb in the dead of winter...in a t-shirt and wide-brimmed hat. Changes in latitude, changes in attitude.
Have fun and be safe!