Is it easy to do business management consulting telemarketing? Can you make money? Can you learn anything?

Now the sales business is almost the same, making money must depend on personal ability, but the retail industry is easier to support. The treatment seems to be ok, and everyone has paid training. The point is that I have learned a lot. I have a classmate in their company who said that all the colleagues in the company are very good and make great progress every day. Hard work is hard work. What's not hard to do now?