Why will we be brought to account for things that are already written for us?
Question

                I WOULD LIKE TO KNOW, IF "ALLAH" HAS YOUR FATE WRITTEN ALREADY AND IN YOUR KISMAT IT SAYS 
YOU WILL KILL SOMEONE HOW DO YOU STOP THIS AND WHY SHOULD YOU BE PUNISHED FOR THIS AS THERE IS NO WAY U CAN STOP IT FROM HAPPENING.
Praise be to Allah.Allaah 
          has decreed what He has decreed. One of the pillars of faith is to believe 
          in al-qadaa’ wa’l-qadar 
          (the Divine will and decree). Allaah has created people and He knows 
          what they are going to do, because of His vast knowledge. He has given 
          His slaves freedom of will, and has shown us the right path, so whoever 
          does good, it is for his own benefit, and whoever does evil, it will 
          count against him. Allaah says (interpretation of the meaning); 
“So 
          whoever does good equal to the weight of an atom (or a small ant), shall 
          see it. 
And 
          whoever does evil equal to the weight of an atom (or a small ant), shall 
          see it.” 
[al-Zalzalah 
          99:7-8] 
And 
          Allaah says (interpretation of the meaning): 
“By 
          Nafs (Adam or a person or a soul), and Him Who perfected him in proportion; 
          
Then 
          He showed him what is wrong for him and what is right for him. 
Indeed 
          he succeeds who purifies his ownself (i.e. obeys and performs all that 
          Allâh ordered…). 
And 
          indeed he fails who corrupts his ownself (i.e. disobeys what Allâh has 
          ordered …).”
[al-Shams 
          91:7-10] 
So 
          it is not permissible for him to harm anyone unjustly, whether by killing 
          or in any other way. Whoever does that deserves punishment in this world, 
          and torment in the Hereafter, for going against the laws decreed by 
          Allaah.