Honouring our language

Every year 21st February is celebrated in Bangladesh remembering the supreme sacrifices of the language heroes of this country. Today our state language is Bangla. But could we establish Bangla as a mode of communication in all spheres of life? Why can't we use Bangla in all govt. ministries? Bangla is spoken by around 30 million people in the globe. 21st February has been recognised as the International Mother Language Day. But as Bangalee, we don't show due respect to our mother language.
I think the following steps could be taken to introduce Bangla in all spheres of life:
1) The present govt. should introduce Bangla in all ministries, departments and secretariats.
2) People should speak Bangla at any circumstances taking it as a challenge.
3) People should not use English unnecessarily while talking to each other.