Do not waste time wondering things you can't do well, instead think about things you can do great.
Speaking English well could open a window of personal and professional opportunities but having great knowledge of business English can give you the edge in becoming indispensable.
Obtaining sought skills is critical in gaining an advantage over others (competitors), but being fluent in English could enable you to leap into the next level of success in international business.
You should not measure your success by the amount of money you make or titles you have, instead measure it by how much value you create and the difference you make.
Self-analysis is vital in the road to success; being unaware of your own skills, capacity, and attributes may cost you the next great promotion.
Failing is easy, but climbing up the mountain requires strategy, commitment, endurance, and the iron will to keep trying till you reach the summit.