The Resource Anchor is something that you convince yourself about. It is there when you feel a genuine flood of the good feelings that you imagined when you had the anchor installed.
Make sure that when you fire the anchor you allow it to work fully, and acknowledge it.
Repeated firings of the anchor without concentrating on the feelings it re-creates will diminish it.
If you have another experience that you'd like to add to the anchor, use the technique you've been taught to install it. This is called stacking anchors.
An anchor can be attached to a particular location. For example many people attach their anchor to the position in which they'll be presenting.
Other people have anchors which highlight their creativity attached to the place where they work.
Anchors can be created for all sorts of different states, like aggression (dangerous) or sexiness (which may also be dangerous!). Sometimes we unwittingly programme these ourselves, of course.
Skilled speakers use anchors based on location, inflection, or facial expression to anchor their audience to different emotions.
If you do have a good positive anchor it can help you with outcomes. Think of three things you'd like to see and hear if you got your outcome.
One at a time vividly imagine each sight, and sound, firing your anchor for each one. This can programme your subconscious to think it has already experienced that sight or sound, and to work to get it again. One typical use for presenters is to imagine members of the audience walking up, smiling, after your presentation. You could also imagine a successful business outcome from your presentation.
A positive anchor can also be programmed to trigger in unpleasant circumstances.
Anchors are incredibly useful. Robert Dilts gives the rundown over a couple of pages in his Encyclopedia