I have helped numerous clients succeed in significant weight loss journeys that involve losses of over 20-30 kg in body fat over the space of 1-2 years or more. I actually find such longer term journeys more rewarding as they allow me to teach my clients about the impact of nutrition and lifestyle habits on their physiology. This not only helps them, but also helps those closest to them as well.
The most important factors for change in reducing and ultimately managing your obesity are your diet, exercise and permanent behaviour modification. All these combined will greatly assist in the reduction of your weight. Prescription medication provided by a dedicated weight loss doctor is a widely used treatment for obesity reduction and management.