How to sell
Get into a company where you are learning. There are different sales methods that should be applied in different situations. Some companies prefer to hire newbies and train them from scratch to sell their products. Try to get a similar firm. Successful experience will help you to continue to sell more profitable product and learn other methods. The main thing is to start.
Read about sales and practice. There is a good book, The Lucky Merchant, written by Frank Bettger. It sets out his personal sales history. He shares how everything did not work out at first, and how further he became the best seller of the company. Look for other books. Read and outline as much as possible. And do not take the word of anyone, check everything in practice.
Pass the training "on the side." Do not stop at what you are taught in the company. You are not going to work here all your life? There are many more profitable products for sale - cars, real estate. To go to this level, you have to work a lot on yourself. Go to all the training that you can afford. Better save on entertainment, then it all pays off.
Try, try, try. The more experience, the easier it is to apply something new.