The document discusses five major hurdles faced by non-native speakers: 1) Pronunciation, as the pronunciation of letters can vary widely between languages, such as the letter "J"; 2) Accent, as certain accents from areas like India and China can be very distinctive; 3) Grammar, as the complex rules of grammar can be difficult to master; 4) Cultural barriers, as different regions have implicit social norms that are hard for outsiders to learn; and 5) Fluency, as achieving fluency is important for professionals but less so for tourists. The document then notes that the company hHelios has helped thousands of immigrants overcome these hurdles through their language training programs.