on IHRC I wrote this about 'self-esteem enhancement techniques'

You can look at self esteem with the following lens:

1. Observable behaviors
2. Process
3. Mental models.

Let's take an example, observable behaviour is when a person asserts
himself when he/she is not taken seriously...would you link that to
self esteem?

On the process front, you get the context into focus...where is this
person not demonstrating self esteem? If in different contexts, then
there is something at the behavioral process level that is being
driven by something more fundamental...

Mental models, are the way we make sense of the world around us and
are formed by our experiences through our primary system. To affect
changes at this level is the level of expertise that very few people
can actually work at...most HR people simply do not have the skill..