I wish you all the best, my man, as I've been there. I can tell you what I did, and I can tell you what I would do differently:
I kicked it cold turkey, and I basically had to call out of work a thousand times when I just couldn't find the motivation to get out of bed. I had to skip class a thousand times; I just barely passed all of my classes that semester, and I had been an A student before. I made it to winter break, and I didn't work. I let my bills pile up, and I stayed in bed and slept all month long like a bear. I just had no motivation, no energy, and I was severely depressed. I am just starting to feel right again, and it has been a long, long, long time since I kicked adderall cold turkey. I'm probably going to have to declare bankruptcy, and even though I'm just about two classes away from graduating, well, I'm putting it on hold for now as things in my life are just all a mess.
Oh, and I began self-medicating quite heavily with opiates after trying many different anti-depressants and finding that they didn't work to take away the unbelievable depression.
So, that's what I did, and I'm not entirely sure what I could have done differently. You might want to try anti-depressants to combat the depression, and I wouldn't give up on them as I did. And just know that it's going to take a long, long time to begin feeling "right" or "normal." Just understand that you might have to miss a lot of school and a lot of work, and that's just all part of it. But I hope that someone here can give you some better advice. Again, I'm sorry, man, and I wish you the best...