I do not know who I am becoming

The days seem to feel like never-ending. I was a happy person, in my opinion I would say, I was an optimistic, happy and a cheerful person,until I hit rock bottom this year. I used to be happy before and now it seems as though nothing feels great. The pressure of being an adult, managing stuffs, expectations which haven't been met; not of mine or others. Yet here I am still trying to keep going and get back on track for myself. Because in a world where one drags another down, who will I search for to save me if I cannot save myself from it? But as the title goes, I really do not know who I am becoming, I am pretty sure almost everyone in their lives have gone through this phase of life and I am hoping that this too shall pass.