La dolce vita is a fancy way of saying "the sweet life" in Italian. It's a phrase that became famous after a movie called "La Dolce Vita" was made in 1960. The movie was about a journalist who hung out with wealthy and famous people in Italy and showed what life was like for them.
So, la dolce vita means living a life that is full of luxury, pleasure, and happiness. It's like having all the good things in life - like nice clothes, delicious food, fancy cars, and beautiful houses.
But it's important to remember that not everyone can have la dolce vita. It's usually reserved for people who are rich and famous. But just because someone doesn't have all the fancy things doesn't mean they can't have a good life too. Sometimes the simple things in life, like spending time with family and friends or doing something you love, can be just as sweet.