You can also supplement with the amino acid 5-HTP which increases production of serotonin. The way I did it (just followed from a book) was to take two doses per day, starting at 50mg. One 50mg dose in the afternoon and once before bed. Then after 3 days increased to 100mg each time, and after another 3 days reached the max dose of 150mg. It it also supposed to help with symptoms of anxiety and help you sleep.