An Important Skill

What is a very important skill a person should learn in order to be successful in the world today?
I think the one is speaking. Speaking is the most important skill human being.
If we can't speak, the community is so inconvenienced and in adaptable.
Second, listening, smelling and watching is too important skill, too.
If we can't use these senses, we are very inconvenienced. And, we can't use these sense.
We are the same as a human vegetable.
We only do walk. So these senses are very important skills in human being.
Third, people have to learn ability.
For example, we must learn spelling. Spelling is important
in Conversation. And we can't write. If you are a fool, you can't learn writing. If you aren't a fool,
you study writing hard.
The most important skill list.
First, speaking, listening, watching ,smelling.
Second,We have to learn walking.
Third, we have to learn how to write correct spell.
And fourth, the most important, the to has happy I think.