Diet

I'm trying to lose my weight but only in theory. I think of what I should or shouldn't eat but still eat the wrong food. I start my morning with cereal or muesli and I'm very proud of myself at that moment but at day time I cannot but consume something tasty and heavy. I do regret about it later and due to this eat one more caloric peace of something. And this continues up till the evening when I only drink green tea. Maybe I shouldn't make so much effort while I'm feeding my baby at the breast? Oh, I forgot to say - my weight is 53 kg and I'm 164 sm tall.