Need help from an empath
Sorry to hear you are going through a difficult time!
I can somewhat relate. I used to feel very blocked, and kind of besides myself. It used to drive me crazy (well, almost). When I exercised my tummy would get freezing cold. And I kept on feeling like I was missing parts of my heart etc. I cannot tell you what it was exactly, but I manage to heal it (my best retrospective guess is that it was not really self-generated, but maybe London resisting me living here?). I did not just do one thing, but many. I mainly used meditation, self-healing work, prayer etc.
I usually go with what intuitions I get, check them if they could be viable, and then work on that. So if you think you might be missing soul parts, go with that for now. You can try healing it yourself first (if that fails you can still try to see e.g. a shaman, or spiritual healer). I.e. just go into meditation, call upon all your ultimate good divine healers and helpers - ask for perfect support for a soul parts retrieval or replacement - and then let them do their thing. They will either retrieve your soul parts or replace them (i.e. they will find and potentially free whatever parts are lost, stolen or else - but sometimes those parts might have to go through a cleansing, so they might give you replacement parts in the mean time (and then reunite you with your genuine parts at a later date (in sleep or meditation)). It might take more than one session, but hopefully you will feel something positive happening from the outset. But do not get discouraged if you do not feel anything initially. Spiritual work can be a bit like going to a gym, just doing it once will not give us a ripped body, it works best if done regularly
I'd ask as well that your helpers enlighten you as to why you might be missing soul bits (in case there is a lesson to learn there). And if the issue is something else, to help you with a more accurate intuition. (NB you can also just go into meditation, and ask for perfect healing, regardless of you being aware what is happening!)
Maybe look into Bach Flower remedies too, or other healing essences - they can be powerful, but are pretty safe to use upon self-diagnosis (ie if you pick one that is not ideal, nothing bad should happen).
I'd also do regular grounding exercises (see one possible one in this blog of mine - http://empathcommunity.eliselebeau.com/profiles/blogs/my-empath-experiences-and-empath-tools-for-healing
I hope that helps in some way. Hang in there - you can do this!
Love and Light!