trying to loose weight, to 133 lbs from 169 i've lost 12 lbs

i was diagnosed as a diabetic, this last week which was pretty scary,
my grand father and step father had type 2 and so does my step brother,
who has all kinds of health issues,. so i am kinda of freaked out this week, trying to figure out how i can feel good loose weight, i was 169 lbs lost 12 pounds my life feels like a roller coaster as it is.