Cheer Up 

This may sound facile and nonprofound. But it's actually the opposite. In an essay called "Working with Early Morning Depression," Buddhist teacher Chögyam Trungpa Rinpoche says, "There's always the primordial dot: that spark of goodness that exists even before you think. We are worthy of that. Everybody possesses that unconditioned possibility of cheerfulness, which is not connected purely with either pain or pleasure. You have an inclination: in the flash of one second you feel what needs to be done. It is not a product of your education; it is not scientific or logical; you simply pick up on the message. And then you act: you just do it."

Try this: The next time you feel shaky, pause. Say these words to yourself: "I could always just cheer up." And then cheer up. This actually works. It may only last for a few seconds/minutes/hours, but you can always try it again.