Salvia is incredibly intense; you are wise to be careful. It's no goddam "party drug" by any means, so have respect! (It wouldn't have helped you fall asleep.. so stop kicking yourself for not trying it.) If you do try it, do it with a 'babysitter' present to make sure you don't hurt yourself while the effects are hitting you. It's over in about 5-10 minutes. No one has ever died or anything from it, so there is nothing to fear but the fear itself. Look at it the same way you'd look at a roller coaster ride. Don't go on it drunk, and stay 'strapped in.'