First one, you should persuade your clients to buy your products using ten percent of your time and energy.
Secondly, you should introduce your products to your clients using twenty percent of time.
The third one, you should spend thirty percent of time and energy to find your clients’ demand.
The last one but the most important one is that you need to make your clients trust you. And this part will spend you forty percent time and energy. You can chat with them, can talk about everything that the clients want to say. Maybe you will make it if they trust you.