Medication is very useful for depression, either as a treatment or as a palliative.  But, and it's a big but, you have to find the right drug at the right dose that's useful for you and this can take a lot of experimentation.  I've been on (at various doses) Lofepramine (worked slightly); Venlafaxine (did nothing); Fluoxetine (made me worse); and now I'm on a combination of Lofepramine and Lithium (works well but not perfectly).  Took me about 3 years to get to this point.

Drugs wont change who you are, but they can make it easier while you work out who you are.