If you are struggling with depression, anxiety, or negative feelings, one of the ways you can help calm your mind, is by active practicing of a mental state.
Mindfulness is the awareness that arises through paying attention, on purpose, in the present moment, non-judgementally, in the service of self-understanding and wisdom. Creating positive, unconditional regard.
We can all take ourselves too seriously sometimes. We can feel stress, anxiety, and negative emotions that while in some cases are understandable, can also grow out of proportion.
One of the foremost teachers of Mindfulness is Jon Kabat Zinn, who provides excellent introductions and training on Mindfulness.