^agreed with eon blue and crankit, regarding adderall.
also, eonblue- I am so sorry about your sister! I know how hard it is when someone has a problem and you can't do anything to help them. It is good for you that you realize this though.
Always put YOU first.
I am taking a day off stims, and I feel SO good; lazy and relaxed. I am eating a LOT though. I think I will be OK as long as there is just healthy food around. Maybe I will do this once every couple of weeks or so...
Regarding my stim (ab)use- I sort of hate adderall now... I have built up a horrible tolerance to it, so I've gone back on my old miracle drug vyvanse, which is just d-amphetamine attached to lysine, so it's metabolized slowly all day.
vyvanse really kicks adderall's ass in terms of effects, especially adderall xr. That shit gave me all the cracked out effects like anxiety, racing heartbeat... and it would go away and then it would come back! vyvanse is smooth and harder (but not impossible) to abuse. That is why docs are OK with giving it as a first-line med of treatment for adhd (tho I think that is just temporary, just like w/xanax or ambien which both used to be viewed as non-addicting "miracle drugs"). At first vyvanse really helped my focus LOTS and gave me all the euphoria, chattiness, lost appetitie, and general well-being that stims are supposed to give to ADHD folks.
A word of caution tho- If you choose to go on vyvanse you MUST HAVE REGULAR EATING, EXERCISE, AND SLEEPING HABITS. My eating habits seriously screwed up my metabolism, as well as lack of exercise, so the vyvanse wasn't being metabolized regularly and NEVER WORE OFF. It took me a few days of being a sleepless crackhead zombie to realize this.
I had to go on adderall 3x (supposedly... 8)) a day instead and it is horrible. I have had to start popping it like skittles b/c it only lasts an hour for me now, and the comedown is horrific. I also snort it if I need a quick boost.
This med is the devil! My bf also loves this shit and I hope I am not leading to his demise by acting as his drug-dealer b/c alcoholism runs in his family...
I'm trying to go back on vyvanse, but I think my metabolism is still not what it used to be, and I'm not getting up earlier enough/getting enough exercise- though I've been exercising and trying to eat regularly.

I've had to take a buttload of sedatives to sleep at night + the comedown=
suicidal.
I seriously think abusing amphetamines may have ruined them forever for me.