Well, there is no need to get frustrated. You need to start with scratch. Stop eating fast food or any kind of junk foods to stay fit. Start eating fruits like apple or bananas for a healthy well-being. Wake up early in the morning and start doing exercise to stay fresh and active for whole day...
I totally agree with you that Green Tea can be very effective in losing some weight. But i have heard that if taken in excess can lead to various illness or disorder. So anything in a limit can be very beneficial as well as effective.