Depression is the opposite of Expression.
The #1 form of expression is doing something for someone else.
Get out of your own head and lend a hand.
Giving a hand will heal your heart.
This will at least take attention away from what is being spent on exhaustive thoughts. We can not make beneficial choices and decisions when our faculties are fatigued. Negativity is both physically and mentally depleting. Again, re-charge the self by thinking about or helping out another person. This removes one from their head and elevates the mood for better decision making.