Buddy... only one way to overcome nervousness. Ya gotta say this to yourself, "I ain't gonna change my mind so fuck it, I ain't gonna worry." As for depressed, ya can't turn back time so it's more or less the same deal.

Now that my take on both are said and done... I originally wrote, "I ain't gonna change my mind so fuck it, I ain't gonna fret none." but I caught the unintended pun in time.