New glasses

Now I have glasses, but I'm not happy, because it's not my preference [to wear them]. 
The reason I did it - I need good vision.  Actually, it wasn't my choice. The simple truth: you decide, or it will be decided for you.

This paragraph is a little odd, almost like poetry.  English is a little wordier than Russian is, in my opinion.  Good job, and keep sharing! 

Этот абзац немного странный, почти как стихи. Английский, на мой взгляд, немного словнее русского. Хорошая работа, и продолжайте делиться!

New Glasses

Now I may have the glasses, but I'm not happy. It is because it not suit me.  match my best version.
Simple reason I did it - I needed to have good vision... Actually I couldn't decide I need this  don't make the decision.
So, The simple truth is. "Either you decide or it will decided for you!"

New Glasses

Now I have glasses, but I'm not happy, because they do not match my best version.
Reason I did it - I need good vision... Actually, I couldn't decide if I needed this.

NOTE: I don't understand what you're trying to state at the end.