You have to see the connections between the poisons of choice here:
You probably started off by drinking, and you coupled it with amphetamines, and now when you drink you get the same desire and lowered inhibitions to get amphetamines. It's like a boring day and heroin for me. Once I have idle hands, my minds first thought is - lets just waste the day away. Or smoking and alcohol. I started smoking while drunk, and now I can't just have a drink without blazing through two packs of cigs, not to mention I won't stop drinking until I am done....in a few weeks.
I can smoke weed and not feel the urge to do anything. In fact when I get stoned I am so hyper aware that you won't get me to do anything harder then a bar of chocolate. The whole gateway drug, Jesus it's hogwash, but, you have to consider how your neuron synapses spark, if you used to drink and do stimulants every time you drink your mind will fire towards stimulants. So, in many peoples cases there is a gateway drug if you associate a substance with another substance, or a boring day with a substance. Boring days, that's my gateway drug.
Anyhow. Glad you enjoyed yourself, now look yourself in the mirror and repeat after me " I am justifying my craving because I can't get my shit together, living in a developed country is so fucking boring, I wish I lived in Africa where I would be starving most weeks but at least I would have something to do like catch buffalo or AIDS or something that would give me a jolt of reality, I had a psychotic break but that was a year ago, I am sure I am much smarter now, so yeah addarol, add medication, yeah I can do it, I am responsible now, I mean look at me I spent a whole year sober and pissed it all away a couple of sips in, but I can handle it." just be honest with yourself, that's all I am saying. Harsh? Nah, I just want the best for you. Really.