There Are Two Ways To Go Back Home

Those who have destroyed themselves can only continue to exist through the suffering and destruction of others.  These ones threw away their higher natures and can never get their higher natures back.  These ones are beyond the point of no return.  

Everyone returns to Source.  The question is, does someone return to Source as a self-aware ascended being, or as disintegrated, non-sentient primordial energy?  Those who have destroyed themselves can only return to Source as non-sentience.  These ones only truly know that they have destroyed themselves in the final moments before their disintegration.

A simple way to know if oneself is destined for ascension or destined for disintegration is to ask oneself the question, "Am I capable of doing something nice for others because I want others to be happy?"  Those destined for disintegration are only capable of causing harm to others, and the instances when they are 'doing something nice' is only for ulterior motives, personal gain, and power over others.

There are individuals who have done horrible things to others but are still capable of wanting others to be happy, and are still capable of doing something nice to make others happy.  This doesn't negate accountability, but these individuals are not destined for disintegration.  However, depending on the severity of their crimes, they probably have 'tough times ahead' to take responsibility for their actions.

There may be exceptions to the above rule, whereas, if severe enough crimes are committed, even those who are capable of kindness will still be disintegrated.  It's a very complex matter, and there are probably instances where the Galactic Courts make the final decision.