pp46-47

(This passage is translated from a Japanese book. Corrections welcomed!)

Don't Make An Excuse

On that day, you didn't take that one step forward.
Don't make it an excuse for not doing your best now.

From now on,
I want to be a person who makes the most of the present.


"Take it easy," the instructor called out to him.
The boy bashfully dropped his eyes.
Those boys who write elegant things like proverbs and slogans
often put unnecessary strain on themselves, harden their faces, and cannot relax.
Since they are perfectionists, they cannot stand their own deficiency.
They often become unstable, and sometimes end up committing crimes.
It's okay to take it easy sometimes.
If you can allow yourself weaknesses, your life is going to be easier.

The yellow parts are things that didn't sound right in English and needed to be changed.

The other things are okay, but the suggestions I listed sound better. Nobel isn't really used like that in English.  I thought about putting in concise or clever, but it didn't have the same double meaning that I suspect the author intended (proverbs and slogans are very short, an elegant solution is a quick, short solution AND an elegant man dresses and acts like a gentleman, which is what a nobel man does as well)  Elegant might be the English word to use.  And the word "those" can be on that line, it just sounds a little better if it's not.

You did a good job. :)