If I checkmanage my time more precisely, I am able to getcan have spare time to read books.

But it isn't possible to use, because I would be totally exhausted if I use theall of my time.

A few years ago, I tried to check how much time I spent a day, and I wrote all of them on my notedown.

Then, I could then get thean extra 2 hours per day, andwhich I used the time more productively.

However, I got tired and finally I was burnt out.

After that, I have tried not to use the spare time except myfor resting.

WitThrough theat experience, I understood this sentence. -

The Importance of Resting

I want to read as many books as possible, but there is notI never have enough time to read.

In a sentence like this, it's more natural to say "I never have enough time," or "I don't have time," instead of "there is not enough time."

If I checkmanage my time more precisely, I am able to getcould have spare time to read more books.

Edited sentence to sound more natural.

But ithe free time I currently have isn't possible to use for this purpose, because I would be totally exhausted if I use the timedid.

The sentence is a little unclear using the pronoun "it." I changed "it" to "the free time I currently have," and adjusted the sentence as well, to provide more clarity.

A few years ago, I tried to checkmeasure how much time I spent aper day, and I wrote all of them o doing things, and I documented the time in my notebook.

Then, I could get theBy planning, I could schedule an extra 2 hours per day, and I used thecould use my time more productively.

After that, I have tried not to use theat spare time except myto rest.

With the experience, I understood this sentence.: "It is necessary to have time for grinding an axe."

When presenting a quote like this, it is more common to use a colon [:] rather than a period [.]
Then, you can add the quote directly after the colon. No need for a separate sentence.

Importance of Rresting

But it isn't possible to use it, because I would be totally exhausted if I would use the time.

A few years ago, I tried to check how much time I spent a day on my activities, and I wrote all of them down on my note.

I don't know if you meant something like that but it'd make more sense in my opinion

Then, I could get thean extra 2 hours per day, and I could used the time more productively.

However, I got tired and finally I wasI was eventually burnt out.

After that, I have tried not to use the spare time except myfor resting.

The Importance of Resting

If I checkmanage my time more precisely, I amwill be able to gethave spare time tofor reading books.

But ithis isn't possible to use, because I would be totally exhausted, if I usewas active all the time.

A few years ago, I tried to check how much time I spent a day, and I wrote all of them on my noteI use my time, and I wrote down all my activities.

Then, I couldwas able to get the2 extra 2 hours per day, and I used the time more productively.

After that, I have tried not to use themy spare time except myonly for resting.

Or "I have tried not to use my spare time for anything else except my rest".

"It is necessary to have time for grinding an axe"

"Ax" - American, "axe" - Canadian, British spelling

The Importance of Resting

I want to read as many books as possible, but there is not enough time to read.

'I can't find the time to read.'

If I checkmanage my time more preciseffectively, I a'm able to getfind some spare time to read books.

But it isn't possi'm never able to useread, because I would be totally exhausted if I use the timedid.

Not sure what you mean. Also try and avoid to start sentences with 'But'.

A few years ago, I tried to check how much time I spent a day,monitor how I spend my time and I wrote down all of themmy activities/tasks on mya note.

Then,I found that I could get thean extra 2 hours of reading done per day, and if I used themy time more productively.

However, when I tried this I got tired and finally I waseventually burnt out.

After that, I have tried not to use the spare time except mytry not to read/work during my spare time and use it to rest.

With themy English experience, I was able to understooand thise following sentence.:

"It is necessary to have time for grinding an axe"