Since Donald Trump won the US election, small business optimism has exploded higher (from 94.9 in Oct to 105.8 in Dec). At the most optimistic since 2004, the last 2 months have seen the biggest spike in hope since 1980's Reagan era spike.
Notably, as @SentimentTrader notes, extreme small business optimism preceded: the '87 crash, '95 rally, '97 crash, '98 crash, '00 crash, and the '03-'06 rally.
With 50% expecting a better economy - the third highest number in history - we do however note that expectations for earnings remain negative.
Put differently, as far as sentiment goes, it doesn't get much better than this.