Add a comma after remember (the first part of the sentence is an introductory phrase).
The second sentence is compound. Add a comma before and.
The third sentence is compound, too. Add a comma after them.
Also add a comma after One day (introductory phrase).
For as long as you can remember, you’ve worn glasses. Your parents always made sure you had them on, and you formed the habit. One day, you forget them, and you realize you can see something no one else can.
The first sentence may flow better if the intro is moved to the end: You’ve worn glasses for as long as you can remember. (Notice there’s no comma now.) On the other hand, this changes the emphasis slightly, from the glasses themselves to the fact that the character doesn’t recall a time when they weren’t worn.
(*sigh* WordPress spelling/grammar checker wants me to change There’s no comma now to There’s no comma know. WTF?)