Weight loss is making me unhappy.

I am not happy about my new diet or let's say " healthy eating " aka weight loss. It's only been 3 days since I started to diet , I am doing perfectly fine and even eating good amount of balanced food . But the problem is , that giving up candy and sweets are making me feel depressed .i think of food all the time , and when I was sad or a little uneasy, I would crave tons of candy just so I could skip everything . Even when I was feeling good . But now , all I think of is " what will my next meal be ? Will I be satisfied? " it's like food was my happy source -happy pill. But not anymore , it's not like sweets . I know I can eat some candy every now and then , but it's just not enough . Honestly , thinking of giving up all the junk food , is making me feeling depressed and cry . Help ....