What helps is to have a true interest in nutrition and getting healthy. This website completely turned the way I think upside-down. Everything I grew up believing I learned to be completely wrong, and for the first time in my life, I UNDERSTAND how to get healthy and how the body works. Now that I have all this knowledge, I'm obsessed with putting it to the test. I love doing this because my diet is the complete opposite of what everyone else thinks is healthy, and it's funny watching them look at the way I eat like I'm crazy. And yet, everyone's attitude is changing as they watch me eat twice as much food as them, yet my body fat drops lower and lower as theirs becomes higher and higher as they get older and more entrenched in the typical American 8-5 workday, sitting on their ass all day. Now, they're starting to come to me for advice, and it's gratifying.
My advice is to turn it into a challenge. Start flaunting the way you eat for the shock value. Your friends and family will initially be concerned for your health - since you're gonna die of a heart attack from all that saturated fat right? - then as they see you get thinner and thinner and healthier and healthier, they'll start coming around and before you know it, you'll be the nutrition guru of the group. That's my motivation - to get myself healthier, and to get my friends and family healthier, too. If I so much as help turn one person's life around, it's worth the hundreds of crazy looks from everyone else.
I'm putting my body through all kinds of experiments on this site for all to see. I find it fun to be a guinea pig, and if my experiments start to help others and turn their lives around/offer them motivation, then mission accomplished.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.