You are investing through what has become the third longest bull market in history. Over recent months it has also been one of the calmest markets on record.
The first chart in this post by James Mackintosh shows the percentage of newsletter writers who are bullish versus those who are bearish. Bull-bear sentiment is often used as a contrary indicator. The greater the percentage of bulls, the greater the likelihood the market will fall is the thinking.
After more than eight years of a relentless bull market, most of the bears seem to have punched themselves out.