The intrinsic contradiction in that passage of Ephesians is, at least for some, glaring.
There are those who would argue that faith, by definition, is a 'work'.
And well, that's a problem for the construct.
Personally, I don't bother with the whole fucking mess.
However, if you want to believe Jesus died for your 'sins', then you have to go on ahead (if you're rational) and consider all past, present and future sins to be absolved by default.
There's nothing to fix and seeing as how your version of righteousness is as filthy rags anyway, do as you will.
Your debt is long since paid in blood.