People here are very knowledgeable of DID, and I was right to think that I can adapt some of that knowledge to OSDD.
The main lesson I learned that emotions and feelings in DID could be fully separated thus only one alter experiences something the whole system is meant to experience. I converted that to OSDD by realizing that other versions of me that came to be on certain events in life is all meant to be me thus I have to find a way to put them all into account.
The problem was that every single version of me seeks to take life in different direction or have interests that asks different lifestyles, so it seems that it is impossible to put them all into account, but I found a way that does that to some extent.
Integration is a huge part of DID treatment, in OSDD it is all about connection. Every version of me has to be connected into some whole that then becomes actual me; I cannot disregard the fact that other versions came to be, I cannot be just one version.
Because of complexity of those versions, I had to introduce abstract roles like main and extra version, and also abstract goals like version being in peace and being open to fulfilling version if possible. Then I just had to think of a whole connecting those roles/goals, and be clear of all doubts regarding which version should have which role.
In the end, there is a pathway to every version, even if only one or two versions are truly in spotlight thus having theirs lived.