A common but complex prob. With me!

I can never put my mind at ease i cant sleep if i too hard a sleep arround 4 in night and wakes up after 5 hrs and dream a lot that too only nightmares i can never concentrate on single thought my mind keeps on wofking i took lot of depression pills a year ago for 4 months and big time alchoholic se non of the sleeping pills help which doctor priscribe i find happiness in non i stay in my room 24 hrs dont like to go out talk to any one or anything only when i drink get high i cry too much confused with my life feel lots of pain inside me and kedp thinking about my worst past and unkown insecure future basically have no family member in this world no frnds every one fake so no one to talk to tried making frnds but failed iam 29 unmarried and i jave trust issues iam scared all the time depresed feel bad all the time i want to sleep but my mind keeps on fighting with me regarding how worst exp i havd in life concerned about frnds love life which is a big 0 feel lost all the time