Achieving National Board Certification last year was a great moment in my teaching career. The process is rigorous so it was something that I worked hard to do. The process really makes you reflect on your teaching and in the end you are a better teacher.
If you have ever thought of going through this process I encourage you to look at the National Board for Professional Teaching Standard website. Also, talk with teachers that have done it. Having support and someone to look over your portfolio entries is key.