I John 1 points us toward koinonia (fellowship). By definition it can’t be pursued individually because it’s a description of relationship. The greek term for “Saint” is always plural. There are no holy individuals – there is only a collective body who has been set apart to be made holy.
From this perspective, sin is not seen as an a “my/your” problem, but as a “we” problem. The sin that I confess is a description of what has happened in our own body. My sin has darkened our fellowship. So when the confessed sin is cleansed, all participate in the resulting joy of koinonia.