Okay, I'm sorry, and I'm going to get flak for this, but for god's sakes... why would you quit smoking pot and drink more??? Have you no idea what the statistics are on the dangers of alcohol? I am a huge proponent of the medical marijuana movement, and as such, am pretty well educated on its risks and benefits. Yes, it can make you not care about things that perhaps you should... but as far as affecting your long-term psychological well-being, it has no ill effects. Alcohol, in contrast, does.
Now, nothing is beneficial in excess. I will admit that I smoked pot every day for a good year or so, and while it had no lasting effects, I did notice I wasn't as motivated to get things done as I should have been. However, I had two straight years of incredibly harmful binge drinking in my early twenties, and I wouldn't wish that on anyone. Honestly, pot has saved me from alcohol, depression, suicidal thoughts, insomnia, anxiety... so many times I can't count. You might think it over, and if it actually does help you, you can avoid the legal ramifications by getting a legal prescription for medical marijuana. This is widely accepted in California, and though there are naysayers who will tell you the government will proscecute you if you join the registry, I have never known that to happen.
In the end, a joint now and then is far less detrimental to your physical and psychological health than a shot or two of liquor, or even a prescription anti-depressant or antianxiolytic.
SD