Beware of pessimists.
Ever over-analyze something, only to realize that there's never a perfect time or that the time to act was a long time ago when you first began pondering the matter?
The world of investing is no different, which is why it's important to buy quality, diversify, and take a long term view.
Applying a "mental filter" to what you hear on TV and read in articles is extremely valuable. One must realize a large component of these things is entertainment & engagement, so that they will make ad dollars.
Consequently, investors often have the tendency to buy & sell at inopportune times.
Luckily, I learned to buy & hold good companies prior to becoming an investment manager, and now use a combination of passive (ETF models) & active strategies with clients. Some are all of one or another, but most are a blend, which allows me to ebb & flow based on opportunities I see, while staying invested.