求翻译：我们通常说心态取决于性格，所以要想有一个乐观的心态就必须有一个乐观的性格。因为心态是决定我们对事物的看法，就像商品的价格取决于商品的质量。是什么意思？

We usually say that state of mind depends on the character, so in order to have an optimistic attitude, there must be an optimistic character. Because the mentality is to determine our view of things, like the price depends on the quality of goods.

We usually say mentality depends on the character, so if you want to have an optimistic attitude we must have an optimistic character. Because their mentality is the sum total of our decisions, just as the price of their goods depends on the quality of commodity.

We usually said the point of view is decided by the disposition, therefore must want to have an optimistic point of view to have to have an optimistic disposition.Because the point of view is decided we to the thing the view, likely the commodity price are decided by the commodity quality.

Mentality we usually say depending on character, to an optimistic attitude must be an optimistic character. Because mind is a decision we think about things, like the prices of goods depends on the quality of goods.

We often say that State of mind depends on the character, so if you want to have a positive attitude, there must be an upbeat personality. Because mind is a decision we think about things, like the prices of goods depends on the quality of goods.