Dear developing countries, it’s not difficult to develop. You can do it in 10 years. 
By 1. simply speaking English, 
2. importing foreign talent to fill or supplement whatever industry you lack locally.
3. Pay your workers well and implement zero tolerance for corruption, make the punishment so harsh that the potential individual gains from the corruption wouldn’t even be worth the risk. 

It may seem harsh or brutal or counter intuitive but you are playing catch up to the developing world who have had over 100 years head start before your country was even imagined. So you have no choice but to implement these policies and copy things they did that worked while avoiding things they did that failed. You are not where they are today DO NOT COPY THEIR TODAY. their today is gotten from the actions and inactions of their yesterday. If you skip the foundation and go straight to building the 6th floor that house cannot last long. Start from the foundation you can breeze through it by copying the successes and avoiding the mistakes of others. 
Good luck.