Low self-esteem is characterized by a lack of confidence and feeling badly about oneself. People with low self-esteem often feel unlovable, awkward, or incompetent. ... “As observers of our own behavior, thoughts, and feelings, we not only register these phenomena in consciousness but also pass judgement on them.
The interval between values is not interpretable in an ordinal measure. In interval measurement the distance between attributes does have meaning. For example, when we measure temperature (in Fahrenheit), the distance from 30-40 is same as distance from 70-80. The interval between values is interpretable.