Our spirit - Imagine an onion

I took part in a course yesterday and I was given this concept of describing our spirit.
Compare your spirit to an onion, it has many layers.

The most visible characteristics are on the surface in the first layer. These are the most public parts of you, that everyone sees, even the people you meet that don't know you very well.

The second layer is under the public layer and is what fewer people see.
These are the things that you are happy for friends and colleagues to know about.
The people who know about this layer know you in a public role and will be able to describe what kind of a person you are.

The third layer is more personal and only a few people who are very close to you know about this layer.
This layer may include your upbringing or background as well as your present life, feelings or experiences you are anxious about or situations that leave you feeling vulnerable.

The final part is the middle of the onion. Your heart, the heart of who you are. The real you.