Please Help Me

Sir my name is naoroz.Age is 28. Sex is male.married.
weight is almost 60Kg.Height is 5.6'.Pakistan.Climate is very hot in summer its 52C.
in winter it is very cold like it goes up to -2C.
Abt my complaints first of all Iwas sexually stong before this i have two children but now suddenly i became sexually weak when i sleeps with my wife i feel myself stong but when i think to start sex then my penis become loose and it gows down, no more erection and i have to cancel sexual intercource forceably weakness of penis and quick and short erection.ejaculation is very soon.I have little sexual desire right now.sometimes i like but not when needed or when it suppose to be.
second problem i face is i did commit masturbation occasionaly not regular since 10years mostly becz of watching pornograph movies but i left all our bad actions like watching pornography and masturbation for past 4 years.Non Diabetic.
In eating i eat every thing.i m fond of eating fruits and milk
I feel angry when it comes to matter of sex.Nothing special is going on in my mind.i m sure feel i can improve.i m not disappointed with the situation.i never used any medicine for improving sex.
family background is business.
Mind behavior is hurry.i like to work.i like people to talk with.i have done MBA and searching for job.i have no problem talking to people.but becz of this decease sometimes i feel dishearted.
there is not effected area.
sir if u help me it wl be greatly appreciated.it wl effect my life.sir plz help me.i wl be very thankful to u.