Translation of unschätzbar

I have been living in Holland for the last 14 years and I know the mentality very well. Holland is a small country, everybody knows everybody, so if we want to succeed, we must seize the opportunity.
The easiest way of writing sentences in Spanish and English is to communicate with other people by email or by chat. I found the different time forms quite in Spanish very confusing at the beginning and it was the most difficult part.
I do not teach Spanish, but geography and history at a school here in Frankfurt. It is good to live for a year in another country. I would be glad to receive a picture of you.