My wife hasn't been "supportive" per se... but luckily shes been ambivalent. My friends were more of a problem i'd say than anything. When i was losing weight i had to stop drinking alcohol, i'd bring my own food to parties, i'd not eat anything at when eating out if there were no reasonable options. All in all.. this level of dedication worked and I lost close to 100 pounds. However, my friends, I think, saw me as being less fun and a bit uptight (I think i gave all my weight to them). If the price of feeling this good is a few friends bailing.. i guess its a cost i can afford.