What Three Tips Would You Share with Novice ESL / EFL Teachers?

What three tips would offer new a ESL/EFL teacher? Hall Houston, author of Provoking Thought: Memory and Thought in ELT, posed this question to several prominent English language trainers and teachers last year. Sean Banville, Russell Stannard, Chia Suan Chong, Nik Peachey, Scott Thornbury, and myself replied. (Naturally, I feel grateful to be included with these far more notable and...