You can't experience happiness if you don't know what the blahs are.
I say run with the blahs, Bob. Nothing lasts forever.
Listen to few hours of Mahler. Wallow in the despair. Then come up for air with a good dose of Milhaud ("Le Boeuf sur le Toit") or Gottshalk's symphony "A Night in the Tropics." When you get to the last movement, invite the neighbors in for an impromptu, raucous Conga Line that pours out into the street. Get drunk, then get laid.
That's what I do.