regret
The Italian word 'rimpianto' is used to express regret or remorse about a past action or decision. It can also be used to describe a sense of longing or nostalgia for something that has been lost or missed. In Italian, 'rimpianto' is often used in the context of personal relationships, such as regret for a missed opportunity or a past mistake.
I live every day without regret.
This phrase is usually used to indicate a lifestyle choice of not dwelling on past mistakes or missed opportunities, but rather focusing on living in the present moment to the fullest.
I only have one regret, that I didn't kiss her.
In this context, 'rimpianto' is used to signify a specific regret - the speaker expressing regret over a missed action, in this case, not having kissed someone when they had the chance.
His biggest regret was not traveling more.
Here, 'rimpianto' is used to represent the protagonist's main regret in life. The regret being referred to here is not doing something more often, specifically travel, when they had the chance.