You're worried because you've gained almost 15kg in less than a year. And now you want to lose weight to have a better and healthier body. As a person with a relatively well-proportioned body, my advice for you is that you must be determined to exercise and have a reasonable diet. Exercise helps you burn calories and get healthier. However, exercise takes a lot of patience. You will feel tired at the beginning, but gradually you will love it as you see the effect it gives you. Besides that, you need a reasonable diet. Limit fried foods, fast foods like hamburgers, and limit sweets like confectionery. You should eat more fruits and vegetables so you can reduce calories. You can find out about the diets intended for weight loss on the internet. If possible, you should head to a fitness center, where there will be experts who recommend your exercise and diet regimen, who will help and supervise you, and of course it will cost you. If you are determined to do so then I think you will lose weight and get the body you want. Hope my advice is of help to you