Whether you are an experienced teacher and/or traveler or a complete newbie to both, you will need to ask yourself three essential questions to determine the answer to the burning question from above^
Are you willing to get comfortable with being uncomfortable?
Do you have confidence in your ability to communicate with others?
Do you possess the skills necessary to inspire, educate, and connect with Thai students ranging from ages 12-18?
If you answered yes to any of these questions, Teaching in Thailand will be as interesting, beautiful, and rewarding of an experience as all of the former/ current teachers you've already talked to say it has been for them.
Honestly, the most important aspect(s) of teaching abroad is your personal ability to: handle adversity, make decisions, make adjustments, and at times improvise as well as go with the flow. As long as you are willing to "get comfortable with being uncomfortable" the rest will all fall into place.
For example, if you are having mixed feelings about your ability to communicate with an entire community of Thai speaking people ie. (School administrators, students, faculty, housing director, local food vendors, etc.) you just need to remember that basic communication is always an option, this includes communication through body language and hand singles/gestures. In my experiences, Thai people are very patient and very understanding, so maintaining a positive attitude coupled with a simple smile goes a long way towards communicating a message.
As far as "the rest falling into place", CIEE does a thorough job with facilitating documents and paperwork needed for pre-departure while OEG does an excellent job running a five day long orientation upon your arrival to Bangkok. I could not be happier with how the orientation process went. The orientation group I was apart of was fortunate to have a somewhat small number of teachers (21) which allowed for more 1 on 1 attention than normal from orientation leaders (Kristen, Derik, and Fluke) as well as a unique opportunity for our group to get to know each other on a more personal level. Whether you are a professional teacher or have no experience at all, orientation covered everything and anything a newcomer to Thailand would want to know. Topics covered included: Introduction to Thai Language, Thai Culture / Culture in the classroom, Classroom Management, Lesson Planning, Thai Food/ Money, Thai education system, Health, Safety, & Security in Thailand.
The biggest adjustment I have had to make so far, as expected, is the newness of everything. Everyday so far I have experienced something I have never seen or heard or understood before, which is both scary and exciting/intriguing all at the same time. At times it can be overwhelming, but I am lucky enough to have a great support system of family, friends, and girlfriend back home as well as a group of new found friends from orientation and school, right here, spread across Thailand.
For more insight follow my personal blog @ rythai.wordpress.com