Let me try!

Myself

I have always liked the deal with people. I was a shy girl in school, I was friendly with all companions but I didn't shared any interests with them. I had some companions with which made me feel very good.

As the time step  At the time (or: in length of time)

I felt better because I got meet had met a lot of people out school (maybe you mean: outside of school?). When I was eighteen I decided to volunteer with disable people. This decision was the most important in my life because I had met a lot of people that nowadays is very important for me.

People with disabilities could teach us a lot of things that normally you don't realized, for example the meaning of smile or the importance of hug!

I hope that you think in this! I hope you think so!

Original

Myself

I have always liked the deal with people. I was a shy girl in school, I was friendly with all companions but I didn't shared any interests with they. I had some companions with which I felt very good.
As the time step, I felt better because I got meet a lot of people out school. When I was eighteen I decided to volunteer with disable people. This decision was the most important in my life because I got met a lot of people that nowadays is very important for me.
People with disabilities could teach us a lot of things that normally you don't realized, for example the mean of smile or the importance of hug!

I hope that you think in this!

Correction.

Myself

I have always liked the deal dealing with people. I was a shy girl in school, I was friendly with all my companions but I didn't share any interests with them. I had some companions with which I felt very good.
As the time  step  passed, I felt better because I got met  a lot of people out of school. When I was eighteen I decided to volunteer helping with disabled people. This decision was the most important in my life because I got met a lot of people that nowadays is are very important for me.
People with disabilities could can teach us a lot of things that normally you don't realize, for example the meaning of a smile or the importance of hug!

I hope that you will think on  this!

With this sentence  "I had some companions with which I felt very good." , it is a bit unusual for English and I am not sure that it conveys your meaning.

Alternatives

I had some companions with whom I felt very good.   ( whom should be used for people, which for inanimate objects or  animals)

I had a few companions that I felt very happy with.  (that one breaks an unwritten rule about how sentences should conclude. Most people ignore it for all practical reasons)

I had some companions who made me happy.

Your opening two sentences seem incomplete to me.

Perhaps

I have always liked dealing with people and though I was a shy girl at school, I was friendly with all my companions but didn't share any interests with them.

Myself

I have always liked the dealing with people. I was a shy girl in at school, I was friendly with all my companions schoolmates but I didn't share any interests with them. I had some companions with whom I felt very good. 

As the time step went by [passed], I felt better because I got to meet a lot of people outside the school environment. When I was eighteen, I decided to volunteer to work with disable people. This decision was the most important in my life because I got to meet a lot of people that nowadays is who until now, are very important for me. 

People with disabilities could can teach us a lot of things that we wouldn't normally you don't realized. For example, the what it means of to receive a smile or the importance of hug!

I hope that you will think in about this!