By Donna FreedmanAll the personal finance gurus (and your mother) have told you to save for future emergencies. But making it a reality-given that you're overdue for a haircut and food prices are rising fast-is easier said than done. Besides, many people have a mental block against putting away money, even when they have a few extra bucks. Click through to find ways you can fool yourself into saving without feeling the day-to-day pinch. Photo by Getty Images.1. Groupon the necessities. ...