Need Motivation and supportive Friends

Hi. My name is Adeel, age 25 and 5.9 inches, for the first time in my life i started my journey to lose weight, before that when ever i tried it didnt survive more than a week, Today it almost a month, and i had lost 12lbs, even in that month there are many ups and down, The day i started i was 260 lbs, i have changed my diet and start walk and little bit of gym exercise, Some time it seems very hard to peruse it further, many of my friends believe it i cant do this. so i need support in my full and and final attempt, my goal is to lose 54 lbs more.