Anti-depressants help relieve symptoms of depression and anxiety which gives some respite, but they don't treat the root cause of depression. That takes a lot of inner work by yourself or with a therapist. Meditation can help get in touch with emotions that might be repressed, and you need to be able to process these to get over depression. Getting closer to your authentic self by various methods will improve all aspects of self-expression, including speech. So yeah, SSRIs might help, but if you deal with the root cause you won't need them.