In the term diathermy, the root therm means:

knowing your strengths keeps you ahead in a lot of things for you have the advantage with what you are good at. for instance, if you were looking at career options, you would be able to narrow down specific job scopes that would suit your strength.

moreover, understanding yourself can you push yourself further especially in school and in life. why aim good if you know you can do or function far better. therefore, awareness of your strength can you grow more and achieve much more.