Protias,
first, welcome to the site.
Second, it's all about intake and physical exertion.
Just a suggestion, try to keep your intake of daily calories to under 2,000. There is plenty of 'on line' sites that can help you figure that out.
Concerning physical exertion; try to do something that is physical but is useful. Recently at camp. I lost 10 #'s in about three weeks by controlling food intake and cutting, then splitting 3 cords of wood plus some other physical activities.
Good luck... [URL=http://www.smileyvault.co