The most important thing to do to speed up the Bitcoin mass adoption is to get the world to acknowledge the importance of Bitcoin and its potential to revolutionise the world.Once it is acknowledged and legalised by governments,people might automatically start buying bitcoins.
We cannot depend upon the governments to do everything to make bitcoin legal and get people's awareness about bitcoin and cryptocurrencies.
If we want bitcoin to become a global currency, every one of us has to play a part in bitcoin's mass adoption and awareness. In order for us to speed up the bitcoin transactions, we can teach about bitcoin to the people in our surroundings.