In one sentence, describe what the following article is about:

People don’t want to buy from a lackluster salesman. Although that doesn’t mean you should be bouncing off the walls with excitement, make sure that whatever it is you choose to sell is something you feel strongly about. Your feelings show in your pitch. Be aware of how your product compares to others on the market, and be able to make a case for yours. You need to make your product or service more appealing than all the others out there, and part of doing that is being well educated about the pros and cons of what you’re offering. In order to successfully sell something, you need to sell it to the right person. Not everyone is going to want a photography package or a special phone service, so find the person who does.  Advertise your product or service in areas which this type of buyer might see it. Don’t force a sale on a buyer if you realize they aren’t interested in what you are offering. This will only annoy them further and frustrate you. You can’t sell anything if you don’t know the ins and outs of it. Be sure that you know every detail about what you’re selling, so that no questions by buyers can go unanswered.

Summary:
Sell something you’re passionate about. Know where you stand. Understand your audience. Educate yourself.