Are emotions evidence?
Emotions are evidence that something is happening in your experience. They are not automatic evidence that your interpretation of the outside world is true. Fear proves that you feel afraid. It does not prove that the feared outcome is likely. Anger proves that you feel anger. It does not prove that someone violated a real value.
This distinction is useful because emotions often contain information, but that information needs interpretation. A feeling may point to hunger, fatigue, threat, grief, injustice, shame, desire, or an old pattern being activated. Mindfulness helps by creating enough space to observe the feeling before turning it into action.
Objectivist epistemology treats emotions as consequences of underlying judgments and premises, not as tools of cognition by themselves. Practically, ask yourself "What am I feeling?", "What stimulus triggered my reaction?", "What value judgments am I automatically attaching to that stimulus?", "What do I think my emotion means?", "What facts support that interpretation?", "What else could be true?", among other such questions.
If emotions become overwhelming, involve panic, trauma symptoms, self-harm thoughts, suicidality, abuse, or inability to function, seek qualified mental health support promptly. Coaching can support awareness and behavior, but it is not psychotherapy.