1. It is not easy to get some mental diseases.
In life, many mental illnesses are related to our personality, and people who are introverted and do not like to communicate with others are often more sensitive. Always thinking silently in your mind is very easy to cause some problems. And when a person is cheerful, it is not easy for him to walk into a dead end when he meets anything. It is also for this reason that they are more accessible and have more friends than introverts. When we have something annoying in our hearts, we can digest it better by sharing it with others.
The last thing to do is to accumulate some negative emotions bit by bit, which is very prone to problems in the long run. There is not an idiom that says "the heart is wide and the body is fat", which is the reason.
2. Thought will be stronger.
If a person is cheerful, he can often solve and digest some setbacks through some optimistic ways, and in the process, he can gradually accumulate more experience to face more problems in the future.
When your heart is full of sunshine and positive energy, you will feel that the sky seems bluer, and those people you meet on the road will be much kinder. If you can face the same life with an optimistic and positive perspective, you will have a completely different experience.