For every pound of weight that you wish to lose in a week, you need to eat approximately 3500 calories less food per week or 500 calories per day. That is about two pieces of chocolates less per day which is not that much when you think about it. On average, if you do a brisk walk/run for about 30 minutes every day, you would lose approximately 150-200 Calories per day or a maximum of 1400 calories per week.
Therefore, it’s easy to see why it’s far simpler to lose weight by managing what you eat as compared to finding the motivation to engage in some form of vigorous exercise every single day. Once you can manage to get your weight to start going down, something you should measure every day, you get onto a positive motivation cycle which will then hopefully convince you to engage in some form of exercise. Obviously, the best combination is exercise three to five times a week which combines some form of cardio with strength training along with mindful eating. However, I have personally found it far easier psychologically to start with changing my eating habits.