What you can stand emotionally and what your finances can absorb are two different numbers. Confusing them is why good plans get abandoned at the worst moment.
Volatility is how much a price moves. Risk is the chance you do not get your money back. Confusing the two is what makes people sell at the bottom.
Dollar-cost averaging removes emotion and timing from investing. Here is how DCA works, why disciplined investors use it, and its honest trade-offs.