Regret is an outward feeling directed towards the past – that we have in the present – of something we “should have done”.

Worry is an outward feeling directed towards the future – that we have in the present – of something that we fear “could happen”

Jealously is a feeling directed on to another person – that we have in the present – of something “we believe we deserve” to have over that person.

Doubt is a feeling directed inwardly – that we have in the present – that something may not go “our way”.

What is always constant is two things: The present moment and where attention is directed.