To kill your nafs

If you want to kill your nafs forever then do this wazifa once only. You will never ever hear your nafs telling you to do any sins again. For 11 or 21 or 41 days, non stop, 
read YA MUAKHIRu ……Allahs name, 846 times, everyday,  after asr salah.
Salavat / darood 9 times before and after.
Do it for 11 days first and see if your nafs is still there, if yes then continue for another 10 days, if it is still there then continue another 20 days. Within this time your nafs will be gone forever.