Healing jJourney

Slightly trembling while writing, I am nervously and excited to set a baseline for my future life~

Sounds more natural instead of using nervously excited.

I have struggled with negative thoughts and feelings for the last few years and they've taken a big toll on many aspects of my personality and life.

Thankfully though, I spent a good amount of time researching psychological factors that ,may have caused those issues and remedies to dissolve them throughout the years.

Healing jJourney

We capitalize the first letter of important words in a title.

SI'm slightly trembling while writing, I aas I write. I'm nervously excited to set a new baseline for my future life ~

This sounds more natural in the US.

I have struggled with negative thoughts and feelings for the last few years and they've taken a big toll on msome important aspects of my personality and life.

This sounds more natural in the US.

Thankfully though, I spent a good amount of time researching psychological factors that ,may have caused thoese issues a. I also found remedies to dissolve them throughout the yearsalleviate them for years to come.

So much so, that this year I have had enough of it and decided to take action.

Slightly trembling while writing, I am nervously excited to set a baseline for my future life~.

I have struggled with negative thoughts and feelings for the last few years, and they've taken a big toll on many aspects of my personality and life.

comma before 'and' when introducing an independent clause.

Thankfully though, I spent a good amount of time researching psychological factors that ,may have caused those issues and remedies to dissolve them throughout the years.

Yours is ok.
alt:
Thankfully though, I spent a good amount of time throughout the years researching psychological factors that may have caused those issues and remedies to dissolve them.

So much so, this year I have had enough of it and decided to take action.

tense agreement:

So much so that this year I have had enough of it and have decided to take action.
So much so that this year I had had enough of it and decided to take action.

Healing jJourney

Usually words are capitalised in title but there's specific rules that I suggest you look at some time :)

Slightly trembling while writing, I am nervously excited to set a baseline for my future life~.

baseline isn't used in this context, can you please explain what you mean?

future life implies that you will have a different life in the future
future implies your current life

I have struggled with negative thoughts and feelings for the last few years and they've taken a big toll on many aspects of my personality and life.

Thankfully though, I spent a good amount of time researching psychological factors that ,may have caused those issues, and remedies to dissolvmanage/cure them throughout the years.

manage = control them but not make them completely go away
cure = make them completely go away

So much so, this year I have had enough of it and have decided to take action.