You will not be paid as high and your won't find as many job opportunities.

CELTA is required to teach in most European countries, but is just considered another teaching certificate in Asia.

Why is ESL teaching your dream? Most of the people whom teach ESL don't dream about it, it is just a temporary job. It is not easy to be a career ESL teacher, not enough money, no benifits like medical or retirement plans.

If you want to teach English and you love English, why not become a Professor of English and work in one of the Universities in your own country. Now, that is a real career.

But, if you really want the ESL job, then you can either take the low paying jobs, try to lie about your background(but they will check your passport), get a passport from England, USA, Canada, NZ, or AU.