"Make it a rule of life never to regret and never to look back. Regret is an appalling waste of energy, you can't build on it it's only good for wallowing in"

Katherine Mansfield's quote, "Make it a guideline of life never ever to be sorry for and never to recall. Remorse is a terrible waste of energy, you can't develop on it it's only helpful for wallowing in", speaks with the need of a forward-focused frame of mind that declines the emotional entrapment of remorse. Mansfield suggests creating an individual rule to shun remorses and avoid home on previous actions or choices. By promoting for this life guideline, she stresses proactive over introspective living, encouraging people to funnel their energy into present and future undertakings instead of being anchored by what can not be altered.

The expression "remorse is a terrible waste of energy" highlights the ineffectiveness and futility of home on regretful emotions. Energy spent on regret is energy that can not be used to attend to present situations or to plot paths forward. This perspective speaks with the chance costs associated with regret; by sticking around in the past, one forgoes the pursuit of positive action in today and future. Mansfield implies that regret has no positive amount-- it can not be utilized as a foundation upon which to construct or improve.

The contrast of regret to "wallowing" intensifies the belief by defining remorse as indulgent and self-pitying. Wallowing, an act of immersing oneself in a negative state, suggests that to reside in remorse is to choose stagnancy over development. It represents remorse as a self-imposed limitation rather than an efficient reflection. Mansfield's message encourages a psychological flexibility that comes from releasing the grip of what could have been to completely accept what can be.

In essence, the quote is a call to action: acknowledge errors or mistakes, learn what may be found out, but then launch the concern of the past. Instead, concentrate on actions that propel growth, fulfillment, and a meaningful existence.