I did one of the earlier TEFL Heaven programmes (Koh Chang) and it left a lasting impact on me. The course was great and I made lifelong friends. The staff were great and they still keep in touch now, sending out details of jobs that I might be interested in etc. The TEFL experience inspired me so much that when I came home to England I decided to do a PhD on it! I finished that last year and I am now writing a book and have started a website- https://tefltourism.com/ . TEFL is a fantastic way to travel the world whilst boosting your CV and it has worked really well for me!
If you want to read more about my TEFL adventures you can visit my blog at http://lifeasabutterfly.com/