Honestly questions like "what happens if I take..." are pointless. Nobody knows how tolerant you are and what your personal biochemical profile is. So nobody can answer the question for you except say that "maybe this or maybe that".
And one more thing, if you don't know what the combo will do to you either, then you're not ready to take it. Combining drugs can result in unwanted and unexpected reactions, especially if you're going to combine like 5 different drugs. If you want to get stoned to forget your problems, which I by the way don't recommend doing, then take one drug in a bigger amount than you usually take recreationally. Benzos (ativan - lorazepam) are considered safe even in an overdose, so I guess that one would be a good one in addition to being an anxiolytic and hypnotic (which is what you're looking for I guess). If you don't take drugs recreationally, then you're not ready to use them as a numbing tool, honestly. Crack some beers or smoke some weed or something.
Stay safe dude.