When your mind feels clogged, or when you feel stuck in your process, do something that will bring you joy, for joyfulness frees up the mind, as it is written:
"With gladness shall you go out." (Isaiah 55:12)
that through joy you are made free and can go out from whatever is keeping you stuck. And if you cannot find the means to gladden your heart, think about something positive about yourself and it will bring you to joy.
Rabbi Nachmon of Breslav,
courtesy of Gershon Winkler