St John's Wort tea (Hypericum perforatum) is actually quite well known as an anti-depressant. Containing the chemicals hypericin, hyperforin, and pseudohypericin, this herb is a proven mood enhancer. Be patient with this herb as it's effect can take a few weeks to develop.
This herb is also known to take the sting off of nicotine and alcohol withdrawal.
From certified organic Australian suppliers