continuation

  am 33 year old male ,am single , am addict of masturbation , i used to do that since am adult , am suffering alot , i felt tired , depressed , i lost my appetite , my weight , and i think i lost my sexual deisre , i think i need sex but my penis is not strong enough as before , am planned to get married , but i have phopia that am unable to do my job well , so i sperated from my gril .
   i noticed that my penis is not so hard as before for more than 17 month , wven am suffering from sleep distrubances ,and when i get up i felt am very tired , also in noticed that my brain is not mine , i mean in the past am very intelgenet  and i had good memory not now nothing .
   am asking if my condition is treatable , can i return back to normal ? what shall i do to stop that bad habit .
it is urgent please am waiting your help .
  bear in mind that am doing it semi daily .
   when i chat or i watch sexy movies i erect but not strong may be 50% the i masturbate during masturbation my penis became  strong ,and i ejaculate early , and may be after 20 min i have deisre to do same .
    am slim , am not smoker , i did not drink ,am not diabetic or dyslipidmeic .i lost early morning erection for more that one year .
       am taking multivitamines, cyproheptadine hydrochloride , pizotifen and esomprazole regularly for more than one year.
      am waiting your advice and help
         thanks
      modi