The mental health self-care checklist is important because it helps individuals to be proactive in their own mental health. By being aware of what can trigger negative thoughts or emotions, and by having a plan in place to deal with these triggers, individuals can take better care of their own mental health. The checklist can also help to remind individuals of the things they can do to promote their own mental well-being, such as practicing self-compassion or engaging in activities that they enjoy.