I like getting up early in the morning, gives me more hours during the day... but by early, I mean normal early around 7.30/8am not crazy o' clock like 6am or something!...
To get up early esp in winter, you should drink lots of water at night and meanwhile keep your alarm on loud and far away from your bed. You'll have to get out of bed either way whether to use the washroom or turn alarm off and once you're up, start chugging lots of strong brewed tea/coffee till you get to work.