Pre or post diagnosis\medications. No Doubt you've had a change in Behavior, lifestyle, choices etc.

Cycling between extreme manic episodes (optimistic, high energy, superficial happiness, sleep disturbances, psychosis)and long depressive periods (feeling suicidal, attempting suicide, no energy, good for nothing, lethargic). I have just vaguely listed a few symptoms. 

If you do not have this disorder or know anyone who does it would appear as if I am describing two separate individuals but that's not the case. While the things I have listed above are a VAST oversimplification of what one may go through or experience with this illness, I thought it was appropriate to point out at least a few symptoms for anyone new.

Now, you don't need to be a rocket scientist to figure out that shifting your personality from flowers and sunshine to having a firearm loaded to your temple in a matter of days or even hours in some people case ( I personally have a pattern of being manic for 2-5 months+ at a time) it's quite confusing and unhealthy but that is self evident.

Myself, having gone through many of these shifts over the years in personality which are becoming more frequent, severe and harder to distinguish from reality, am losing my identity. Going through such a large transition in mood, Behavior and routine is taking its toll. I'm no longer aware what I truly stand for, what my core beliefs are or where my values are any longer. I truly don't even know what I enjoy , it's surreal. I would say I've regressed but that's improper, I've deteriorated. I'm trying not to divulge too much on my personal situation but a few details seemed important since this illness is entirely arbitrary and a small amount of context may be beneficial.

 Has anyone else experienced this loss of identity/personality? I'm not talking in regards to a temporary Loss either, I'm referring to what seems to be permanent.

TL;DR - if you have bipolar disorder over the years have you began to lose your identity\ personality?