If you want to drink something uplifting, green tea may be it.

Green tea has been reported to provide many beneficial effects. The study referred to here was related to depression and included 1,058 Japanese individuals aged 70 years or more (Niu K., et al. 2009). In this study group, 34.1% was found to have mild and severe depressive symptoms and 20.2% severe symptoms of depression. The results documented that a frequent consumption of green tea, 4 cups or more daily was associated with a lower prevalence of depressive symptoms. If you like drinking something hot, green tea would be a good choice.

Green tea consumption is associated with depressive symptoms in the elderly. Niu K, Hozawa A, Kuriyama S, Ebihara S, Guo H, Nakaya N, Ohmori-Matsuda K, Takahashi H, Masamune Y, Asada M, Sasaki S, Arai H, Awata S, Nagatomi R, Tsuji I. Am J Clin Nutr. 2009 Dec;90(6):1615-22. Epub 2009 Oct 14.