I'm way overweight

instead of the 189 I used to weigh I now weigh in at 245.  Scary I know.  I'm trying to eat less.
I know that's not good either cuz when I do start eating again it stores it as fat.
I feel so lost.
I want to get back into my size 18's but see no way to get there,
I feel so empty.
 
Someone help me,