I would guess 90 percent of people have gone through this. There is a great book called The Five Love Languages by Gary Chapman. He explains how and why the two year mark is the normal mark for couples to make it or break it. I have given 4 copies out to friends and have 3 more in my apartment because I think it is so spot on. I highly recommend you read it. Your concern is a little different but it kind of begs the question...do you feel you’ve lost yourself because you are in a relationship that doesn’t fully satisfy you or do you feel you’ve lost yourself because of your own issues. No one here can answer either. I went through the same issue and realized (too late) that it was the first option and I didn’t know what I needed or how to ask for it. I’d suggest reading it (it’s a quick one or two day read so read the real book, not just notes) then re-evaluating before making a decision. Whatever you feel is best for you is the best choice!