Anyone can relate ?is this ocd or something else

I have some questions and a fear : The questions are 1-Do we have free will or we are determined ? Are our feelings , thoughts , desciouns , desires free or they are determined 2- What is I ; what am i ? A brain ? A body ? A soul ? 3- what is feeling , like really what is feeling or imagining , is imagining like putting a picture infront of you but in the mind ? What is thinking , i know that its an electric thing but what do we sense ? The fear is .... Is this hyperreflexivity ? (Which means so high self consciousness ) When the things i take for granted are now not granted .... And if so does it mean the start of schizophrenia That is making my mind state like shit Just not being able to do any thing