I dont think we are less intelligent than students from others countries, but if we work harder, have enough documents and do strong research, we could be stronger. There is no elevator or lift to success. You have to take the stairs step by step. Don't be rush or you might not be able to reach the goal with experiences. Further more, you should say thanks to the people who reject your request because of them you can do everything by yourself. BE THANKFUL for what you have; you'll end up having more. If you concentrate on what you don't have, you will never, ever have enough.