Sustanon
Bluelighter
IMO it all comes down to your personality, your life in general, the situation you are in, the substance you are abusing and for how long and so many other factors. Most of the time someone using harder drugs like cocaine, meth or opiates on a regular basis may be a lot less happier. Serotonin / dopamine depletion can play a big part of it too. For me personally I was a happier person when I was just using MDMA and LSD here and there but now days I feel a little unhappier due to the fact of WD's and the alike. Each and everyone of us is different so its impossible to generalize.

I was a bit worried that my cover had been blown, I too have a mono-brow, my name ain't Christian though.