When you have a dark mood, everything seems to go bad and weird bugs pop out from nowhere, there’s little you can do to boost morale and get back to happiness.
One thing that works well for me is changing something.
Mobile Twitter client, desktop wallpaper, desk orientation, whatever can be changed with minimum effort.
That small change gives me the feeling of freshness I need to get back to work with renewed energy.
Try it, it’s surprisingly effective.