Losing weight requires you to be 100% committed. You can’t commit to your weight loss goals for a week then take a week off, especially if your weight loss goal is a large number. You need to realize that on average, a healthy weight loss ranges from 0.5lbs to 3lbs a week. Losing that amount of weight a week is hard to sustain and often results in a relapse. So having the proper mindset will help you realize that this is not going to be a quick fix and will take some time.