If you knock on the meridians as a fixed action, you can stick to it. Everything you give will be rewarded. You don't have to knock all the meridians once a day. You can knock on the door selectively according to your physical characteristics. You can adjust the number of knocks and what meridians to knock at any time.
I persisted for more than half a year. Of course, my husband knocked on me, but he persisted for more than half a year and it was quite effective. It's really a feeling of moistening things and being silent.