1 year rule

I've heard different rules and ideas. In one regard, its like ending a relationship (with PMO).

The “How I Met Your Mother” theories
Ted: Everyone has an opinion on how long it takes to recover from a breakup.
Lily: Half the length of the relationship.
Marshall: One week for every month you were together.
Robin: Exactly 10,000 drinks, however long that takes.
Barney: You can’t measure something like this in time; there’s a series of steps—from her bed to the front door. Bam! Out of there. Neeeeext!

If you are using this to judge others, I don't know that it will bring you more success or not. My guess, if you are using this to judge yourself, and you feel you honestly have arrived at a better place, this time might really work.

Just like in dating divorcee's or someone that has exited a relationship, there is no amount of time 1year/2years/etc, that will guarantee that the person is capable and ready to be a good partner.

Doesn't seem like life ever offers us certainties like that, so we just have to try, and when things start to go wrong, have the strength to pull away despite our feelings (either out of respect for the partner's happiness, or out of respect for our own).

But honestly if it was that easy, we wouldn't be having this discussion.