The most important thing for a salesman is patience. In this world, there are all kinds of birds, some good people and some bad people, and some people want to beat them. I can't help it I have to be patient in this business. Don't be rude, don't have uncivilized language and actions, and warm the sun.
Job skills, depending on the popularity of credit cards there, the cheapest is telemarketing, that is, sitting in the office and calling various units. Anyway, the telephone number of the company is free of charge, so don't let people think that you are selling credit cards, which is easy to make people feel disgusted. Always remember that you are a bank employee, and you are helping the bank to handle formal business, regardless of your salary and rich side. Everyone has this mentality. If you take the initiative to find him, maybe people will not care about you.
If you are diligent, you can distribute leaflets in various buildings and sell them door to door. Of course it's very tiring.
If you want to be free and easy, find more relatives and friends, let them introduce you to customers, then let these customers introduce other customers, and so on.
That's about it. After all, there are regional differences in narrative and skills between us. Feel for yourself. Good luck!