According to Scientific America, 'Research suggests that roughly 80%of people who shed a significant portion of their body fat will not maintain that degree of weight loss for 12 months; and, according to one meta-analysis of intervention studies, dieters regain, on average, more than half of what they lose within two years' .(Nov. 7, 2019.)
Losing weight is not hard but keeping it off is the challenge. To be honest, it's not really weight loss that needs to happen. It's changing habits that causes weight loss to occur. To change a habit, you first need to become aware of it. Next, you need to replace the habit with something new (eg. not having breakfast to having it every morning). Then you need to practice the new habit until it becomes stronger than the old habit. When doing this, look for and change triggers that activate the old habit (eg. getting up too late, not being organized). Identify benefits that occur as a result of the new habit (eg. more energy in the morning anf feeling better) and use those benefits as motivators to continue the new behavior.
It's important to remember that change is what you are working on and weight loss is one of the benefits!