Timing of the anchor
A good anchor has a 1: 1 relationship to the excitation curve. That means, we begin to set the anchor when the excitement is nearing its maximum and increase the pressure (in a kinesthetic anchor) with the increase of excitement. It is important to stop in time so as not to anchor the down curve.

Intensity of the state
In order to install a really strong anchor, the state we have anchored also must have been strong. We do not create a state with an anchor but rather hold it. You can only anchor what's there.

Precision of repetition
If the location of the anchor is not accurately hit when repeating, then the anchor will not work or not at the optimum intensity.

Uniqueness of the anchor
If the same anchor is used for different states, the states will mix. If you want to install an anchor that will last for a long time, then it is important to create one that is not constantly overlaid by other experiences in the course of a normal life. So, a handshake is certainly not a good anchor, because it is constantly overlaid by different experiences.

Purity of the state
When someone remembers a positive state while regretting that this state will quickly come to an end, this wistful feeling will naturally also be anchored. Therefore, make sure that the state you anchor is as "clean" as possible.