Unfortunately, there is no real shortcut to weight loss.
You need discipline. You need to commit to change.
Understand that it is difficult. Accept it.
Realize what you have to do.
The fact that you're looking for a trick means you don't have the right attitude yet.
Losing weight fast is like trying to make money overnight.
Everything worth doing takes time.
Monitor your progress.
If you aren't reaching your goals, adjust your routine.
Either reduce your caloric intake, exercise more, or do both.
Set yourself an achievable goal. Like a pound a week.
Monitor your weight regularly and adjust your routine accordingly.
Try not to get too frustrated if you fail to meet your weekly goal.
...
Losing weight too fast isn't healthy and it can result in loose skin.
Stretch marks are more likely to fade, too, if you do it gradually.
Good luck.