Absolutely no one really enjoys sales when you're trying to convince someone to use your product or business after they've already said "no" or "I'm just looking" or "Leave me alone" but yet if every company/entrepreneur stopped at the first roadblock we would still be in the stone age. Sales makes the world go round, however you need to LOVE what you're selling or else it will not work. That fundamental belief is not only powerful but more contagious than a certain coronavirus pandemic. People buy and use something sold to them if they see what you see in the product. If you have to sell yourself on the product and convince yourself it's ok, stop and move on. The best founders have always had a way with sales: Steve Jobs, Bezos, Elon etc. You don't have to be the most coherent speaker, just love and believe in your product and business.