It hasThere are a lot of reasons towhich may cause negativity in a person，. I have to describe it abstracted if I want to summarize it.

It is an unclear antecedent. It's a pronoun which means that it has to replace something. What do you mean by 'it' in the first sentence?

In my opinion, the reason iswould be that people’s supported column in their hearts haves been shaken.

Other than 'in my opinion', you could state 'as for me,' 'I think,' and 'my view is.'

In addition, you may be referring to a support column or support pillar. It is a tall vertical cylindrical structure standing upright and used to support a structure.

You may ask what is thea supported column is. Well, it is the most solidtangible thing which can support you move forward.

I think, instead of solid, which refers to a materialized substance, the most appropriate term to be used would be 'tangible' which means clear and definite, or something that can be touched. You could also use the 'most important.'

For my father, he does everything for his kids, me and my young brother, and wme. We are his supported column.

For me, I am working hard to achieve my dream and would like to make more money for my family, it. This is my supported column.

We may feel negatively if we think we cannot protect our supported column.

That is a thing.

You could also state: "It happens." or "That may happen."