i believe i can be a part of a good change in this world by sharing my knowledge about bitcoin especially to those who is unemployed in our country maybe like a retiree who like yo continue earning money as much as they can for they family so they fo not think that they are useless in this world.i will share what bitcoin  is and how bitcoin helped a lot of people in many country and i am one of the witness that bitcoin is great job and i will share how to earn here.that's all thank you.