One of the worse things you can do when trying to lose weight is get depressed about the whole ordeal. You also don't need to pull the blinds and hide behind closed doors because you don't feel attractive. You need to get out in the world and meet people and do things. It will take your mind off of your body and give you a whole new outlook on your live. Don't give in to your low moods because of your weight. Don't let it control you of your life.