Attention is powerful and it amplifies whatever we pay attention to, but it is also very fragile and can be rapidly depleted by stress, threats, or poor mood (Dr. Amishi Jha).   When your attentional resources are spent, you can’t perform well, and you must take a break and replenish. Trying to push through when your attentional resources are low can lead to poor or weaker-than-usual performance, lower self-esteem, loss of confidence, anxiety, or depression.