Basically they are the same. No worries. 8)
Let me ask you some questions first.
1. Is 'everything' a singular idea or a plural concept? :DHow is everything?
2. Based on your answer on my former question; if you choose 'sigular idea,' then what be-verb(is/are) will you choose to go with 'everything'? :)
1. Are 'things' a plural concept? :DHow are things?
2. If yes, shouldn't it be friends with 'are'? :D
Does that help? :wink: