I can`t take this anymore?

i can`t take this anymore people. I can`t understand what is happening to me. This completely overtakes me. I feel like I fall somewhere and can`t get out. i feel like i lose myself in thoughts. those thoughts are bad and they don`t let me to live. i can`t concentrate. i don`t feel energy, i feel like i have lost myself. i feel reality, but the true way how to feel reality comes from yourself, like your view of reality. and i don`t have it. i don`t feel like i`m watching throught my eyes, i feel like i`m lost somewhere. i can`t concentrate. i was sitting in school in maths today and was doing an excersiese and i was watching on it for like 10 minutes, then my friend showed me that it is easy - here is pitagorus. i mean i used to be really really good at maths but i just couldn`t see that pitagorus triangle. it was so easy excersise. what is happening ? i feel everything painfully, can see only the bed things everywhere, can`t see anything positive. i`m having trouble to communicate. it feelsl ike i want to say something but i just can`t get over this and think about what to say and i can`t get over this and start to do what i`m doing. i think that it is not depression because i can do anything. i can do anything in this stage but those actions will be like automatic and without any thinking. i simply feel like i have lost my mind and thats it.