It can be difficult to sell a product you don't believe in. On one hand, you want to make the sale and earn the commission. On the other hand, you don't want to lie to the customer or peddle a sub-par product. If you're in this situation, it's important to be honest with yourself about whether or not you can manage to sell the product. If you don't think you can do it without compromising your integrity, it's probably best to walk away from the sale. However, if you're confident that you can sell the product without endorsing it wholeheartedly, then go for it. There's no shame in earning a living, even if it means selling something you're not 100% behind.