I stopped jerking off, but how could i stop lustful thought

I struggle with the thoughts of lust every day brother. Even on day 30. For me I replace it with prayer and activity that require my focus else where. But its a never ending Battle. Try not to feed the lustful thoughts. You got this.

You need to proactively fill your mind with something else. You may also need to make an effort to avoid the stimuli that inspire those thoughts, at least until your brain has healed some.