I used to write my dreams oin a little notebook, when I had time.

in a little notebook: inside a little notebook
on a little notebook: on the cover of the notebook

It really helped a me a lot to realized how my mind works.

For example, I had always dreamt/dreamed about my days in primary and high school.

I was too shy back then, because of some insecurities.

Well, that was at first, then Iit was just me gettingabout how I got along with everyone,. It felt so good.!

at first = al principio

GI guess it is because I'm have been working on my self-esteem, so I think I'm better now.

That's all,. This is my first time writing here!

I used to write dreams oin a little notebook, when I had the time.

It really helped a me a lotme to realized how my mind works.

For example, I had always dreamed about my days in primary and high school.

I was too shy back then, because of some insecurities I had.

So I dreamed about how anxious I was when trying to speak withto my classmates.

This sentence can be added to the last one I think. ("and so...)"

Well, that was at first, but then Iit was just me getting along with everyone, Iso it felt so good.

GI guess it is because I'm working on my self-esteem, so I think I'm betterfeeling better about myself now.

I think this is what you mean, right?

That's all, first time writing here!

I used to write dreams oin a little notebook, when I had time.

On = on the cover of the notebook, for example.

It really helped a me a lot to realized how my mind works.

For example, I had always dreamt about my days in primary and high school.

I was too shy back then, because of some insecurities.

Well, that was first, then Iit was just me getting along with everyone, Iand it felt so good.

GI guess it is because I'mve workinged on my self-esteem, so I think I'm better now.

I used to write dreams oin a little notebook, when I had the time.

It really helped a me a lotme to realized how my mind works.

For example, I had always dreamed about my days in primary and high school.

I was too shy back then, because of some insecurities.

So, I dreamed about how anxious I was when trying to speak with my classmates.

Well, that was the first, t dream. Then Iit was just me getting along with everyone,. It felt so good.

GI guess it iwas because I'm have been working on my self-esteem, so I think that I'm better now.

That's all,. This is my first time writing here!.