Naivety is a touching quality inherent in young children who have not yet had time to get to know this world well. In an adult character, naivety is irrelevant. Overly enthusiastic and impressionable natures, looking around with childlike simplicity, face certain difficulties in life.
The modern world is much harsher than naive people think. If you do not adjust to it, you will have to pay for your naivety. You can be fooled and set up, so be on the lookout and get rid of this childish trait.
Understand that good triumphs over evil only in fairy tales, and an ideal society is a utopia. In reality, people are not clearly divided into good and bad, they all combine both qualities. Unfortunately, there are inveterate villains in our life. Finally take off your rose-colored glasses and look around. Of course, you shouldn't see the enemy in everyone you meet, but you need to be vigilant.
Alas, people are not entirely benevolent and even cruel. They can take advantage of your childish simplicity. Think of the news reports about scammers who cheated gullible retirees, or pyramid schemes in which naive people put their last savings. Don't let your naivete go away as a result of such events. Learn from other people's mistakes.
If there are people around you that you are responsible for, think about them. With your naivety, you can hurt them too. In any case, you, as an adult, are responsible for yourself. At least this fact should bring you down to earth.
Living in a society, you must accept its rules. A person who is not like the others in his touching naivety can survive from the team, not be taken seriously. If you dream of doing an important job, being a leader, you shouldn't be a naive person.
Belief in only good things is suitable for childish carelessness, when there are wise and strong parents nearby who will protect from the world. As you mature, you must understand that together with childhood you need to part with pink glasses and accept this life as it is.