Can long-term investment be beneficial?

I have noticed the view of few persons that a long-term investment for the currencies which are expected to become strong in near future is more beneficial,especially the Iraqi dinar which could be more profitable because of oil rich economy.Is it a right approach?

g han is mein apki long termn investment kaafi beneficial hai aur ap is mein achi khaasi earning kar sakte hian bs bata hai isko theek se seekhne ki.

gee haan bhai long terms trading se ache benefits milte hien aur trader ke lie lazme hota he keh trader market ke trend ko smjhe aur trader forex trading mein work ke economy ko smjh kr trading term ka istemal kre