Image in a page comes up without handles

To resize an image in page or post, you simply click on it and the image handles come up. These handles enables you to resize the image. However, I am not getting the image handle. When I select the image I am getting the whole image highlighted with any handles so I can’t resize it. The only way to resize it is to go into media library and play around with the width and height. Can you please tell me what setting needs to be turned in order to get the image selection back to it’s original state. Please help me.