Benzos in high enough doses will do just that (and much the same to social anxiety), but as far as consciousness goes are likely to leave you with sedation, blackouts and amnesia. I've personally found phenibut the best compromise, it doesn't have the same immediate comeup most benzos will give you, but lasts all day and shouldn't make you feel tired or impaired. I've not actually tried it, but I've heard several people describe having similar effects from baclofen (which I think is basically para-chloro-phenibut), so that might be worth a try too.