Thin And Small Penis: What Is The Treatment?

Write here  salam sir , how r u  . sir ma  4 saal  sa  musht zani kar raha hon  pehle mari  sahat bohat achi thi  lakin jab sa ma na musht zani shuro ki ha  ma bohat  weak ho gia hon  , ma is adat ko chorna  chata hon lakin nahi chooti  , aur   ab ma bohat jald discharge ho jata hon  just  1 minute ma  aur mara penise  bi  patla  aur choota ha   plz  mujhey  koi hal  batayein  jald hi mari shadi hona wali  ha  ma kia karon  any medicine  ???

Dear Sir, I am doing masturbation since 4 years. I have had good health but since then it declined. I want to quit it but unable to do so. Due to this my ejaculation time also decreased and my penis become thin and small. Please tell me any solution since I am going to marry very soon.