Practicing these techniques has been difficult for me, so I can tell you from experience not to get frustrated. Progress may seem quite slow. I find myself getting lazy, not meditating for weeks at a time before I am reminded to resume the practice. I still fall into the ruts and potholes of life, swept away at times by pride or envy or insecurity. We are all human and life is hard.
Frustration is a normal and common reaction.
We are not a patient species. As I have mentioned, it is the direction that matters, not the speed. If you are evolving into a more loving, more compassionate, less violent person, then you are moving in the right direction. Like me, you may become distracted, make wrong turns at times, lost until you find the way back. It may seem as if you're taking two steps forward and then one step backwards, but that's all right.