Re: Not feeling good at all...
I'd agree with Joe here Panda. There's nothing worse for my own mood than long dark nights and dull dreary days. Exercise can give you a sense of achievement too. What did your doctor say about your sertraline dose? Did he/she say you could increase it? 25mg is a low dose as you mentioned so you would likely benefit from an increase. Hope you feel better soon.
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'It was a wedding ring, destined to be found in a cheap hotel, lost in a kitchen sink, or thrown in a wishing well' - Marillion, Clutching at Straws, 1987