I took adderall (rx'ed off-label for treatment-resistant profound depressive breakthroughs, not abused) earlier today, 30mg to be precise. My fatigue and adhenoia along with, of course, the horrible depression I had implied earlier had only moderate improvements even on the peak. This was an unusual circumstance though as it usually kills my depression and amphetamines really can do a fantastic job (at least if you ignore potential side effects) for breakthrough depression. However, this is addiction central. I would be absolutely fucked if my mother did not keep this in a safe and restrict my use. Sometimes, there really isn't a full solution even PRN or, god forbid self-medicated, for even amongst the most powerful of psychoactive drugs to really do much, except make it tolerable enough to function at least, if it's severe enough (that level of severity would be beyond extreme though).
In your situation, especially without a doctor's discretion, as has been said before, this would just be a recipe for disaster. Don't do it, please, until you tell a professional (who, in all honesty, will reject your proposition). Lyrica helped me loads for some reason, just to throw out another option since it appears SS/NRIs, as a first-line treatment, apparently must not work for you. Correct me if I'm wrong. There are lots of drugs that can help that are much safer than amphetamines and can even be stronger antidepressants depending on body chemistry with the bonus of less side effects. Trial and error. Don't be afraid to ask your doctor for something as long as the scheduling isn't high (which should be last resort regardless).
This all solely relates to medicative reasons. Living a healthy lifestyle is important as well, of course, but sometimes it seems to just be impossible with depression and medication may be necessary to help facilitate a healthier lifestyle. Maybe even to the point where you would no longer even need them anymore.