Left neck with head eye & jaw pain. Do?

I always feel inferior with every human being and compare myself to almost everyone. I always feel as if my head is not stable and dizzy and I can't think or see clearly..iam.not able to decide or think properly..I get random leg pains too..sleep is ok ..but after I get up in morning..I get pains in left eye head arm and neck and shoulder & back more..i feel i can't do anything in life..I have social anxiety too...Its very difficult to maintain relationships with anyone..I am not able to make new friends..I feel like I'm lost inside my body downtimes...I feel really fatigued and depressed at the end of the day..eyes feel funny sometimes with slight pain..I panic sometimes too..I wonder why I am I really alive..I want to start a business but unable to coz of these problems..I'm not taking any medicines now..sometimes moving my eyes is also difficult..even lights are irritating..and I have fatigued and anxiety when in cold temperature..I don't know what to do