I know exactly where you're coming from. When you're in that moment of deep depression it can feel like you'll never get out. My trick was to do all I could to take a step back and try to relax as best I could. What I would do was to to try to visualize myself in the future looking back at it, and feeling a sense of empowerment because I got through it. Because of that I was able to move on, and do good things for people that depend me as well as better myself as an individual.