Many investors are scared to buy stocks as the market is heading lower, fearing something bad must be right around the corner, Jim Cramer told his Mad Money viewers Wednesday. But that's almost never the case, which is why when the market dips, you need to be ready to buy.

Investors should think of these wild market days as "Flash Sales" -- here and gone almost before you know it.

On big down days, you need to remove emotion from the equation, Cramer said, and that means having a shopping list of high quality companies at the ready, along with the price you're willing to pay. When that price arrives, don't hesitate, pull the trigger before the sale disappears.

What should be on your stock shopping list? Cramer once again advised sticking with long-term secular growth trends, like aerospace, where you could have purchased shares of Boeing (BA) - Get Report yesterday and caught a 4.9% gain today.

Gaming is another secular trend, Cramer said, with Electronic Arts ( ERTS) and Take-Two Interactive (TTWO) - Get Report both up almost 7% on the day, taking chipmakers like Advanced Micro Devices (AMD) - Get Report up 6.7%.

Cramer was also bullish on the defense stocks, with Lockheed Martin (LMT) - Get Report continuing to rally, and on the cloud computing names, like Workday (WDAY) - Get Report and Service Now (NOW) - Get Report , both of which are among the leaders in that group.

Embrace the shopping-list method, buy in stages as the market declines, and remove emotion from your strategy, Cramer concluded, and you'll be a lot better off than most investors.

Cramer and the AAP team are adding three stocks to the bullpen, including Darden Restaurants (DRI) - Get Report and Nordstrom (JWN) - Get Report . Find out what they're telling their investment club members and get in on the conversation with a free trial subscription to Action Alerts PLUS.

State of the Markets Address 

Last night's State of the Union speech didn't hold any surprises, Cramer told viewers, but it did give the stock market just wanted it wanted to hear.

Cramer said President Trump's speech last night had everything that investors were hoping for. It included a mention of the market's gains over the past year. And it also talked about the need for more defense spending, which is likely to boost stocks such as Lockheed Martin, Harris (HRS) , Raytheon (RTN) - Get Report and others.

When it comes to infrastructure spending, however, Cramer was less optimistic that Congress has the will to get anything done. That's OK, though, as the private sector and state-funded projects are enough to boost Caterpillar (CAT) - Get Report and United Rentals (URI) - Get Report .

Finally, while healthcare wasn't mentioned outside of the need for lower drug prices, Cramer said he still likes Centene (CNC) - Get Report .

Over on Real Money, Cramer breaks down the State of the Union address in "rhetoric per share." Get more of his insights with a free trial subscription to Real Money.

Taking the Temperature of the Healthcare Sector 

You can't assume the recent selloff in healthcare is an immediate buying opportunity, but for two companies that just reported stellar results, that is most definitely the case.

Cramer said that Abbvie (ABBV) - Get Report is still a terrific buy, despite shares already being up 83% over the past 12 months. Abbvie just delivered a four-cents-a-share earnings beat with a 14% rise in year-over-year revenues. That translates to 32% earnings growth from what is supposed to be a slow and steady drugmaker.

Then there's Biogen Idec (BIIB) - Get Report , which is also a strong buy, despite posting a 19-cents-a-share earnings miss. That's because what matters most for biotechs is the forward-looking guidance, which was incredibly strong. Biogen also has multiple catalysts on the horizon with Phase III data coming soon for three of its drugs.

That's not to say that all drugmakers are buys, Cramer cautioned. Eli Lilly (LLY) - Get Report , for instance, continues to disappoint as the company struggles to find growth. But Abbvie and Biogen buck that trend and can be bought on any weakness.

Executive Decision: Chubb 

For his "Executive Decision" segment, Cramer sat down with Evan Greenberg, chairman and CEO of Chubb  (CB) - Get Report , to discuss the insurance business, after what was a particularly tough year for many areas of the country.

Greenberg said the insurance environment is starting to improve after two hurricanes and rampant wildfires in California. The market is transitioning, he said, and rates are responding in areas with deficient pricing.

The key to Chubb's success has always been its superior products, superior service, geographic reach and strong execution, Greenberg said, and the 2016 merger with Ace Limited has strengthened their position in many areas. That's why customer retention is "off the charts," Greenberg noted, as customers are continually satisfied with their service even though they are not the cheapest insurance around.

Executive Decision: ADP

In his second "Executive Decision" segment, Cramer welcomed back Carlos Rodriguez, president and CEO of Automatic Data Processing (ADP) - Get Report , the payroll processor that just posted a nine-cents-a-share earnings beat and raised its guidance for the rest of 2018.

Rodriguez started off with an update on ADP's relationship with activist investor Bill Ackman, saying that their disagreements are "water under the bridge." He explained that their views were always similar and the disagreements were mainly over the pace of progress. A little more urgency is always a good thing, Rodriguez said.

As for ADP's business, Rodriguez noted that strong employment and strong economic activity is always good for ADP and higher interest rates and lower taxes are also helping to boost the bottom line. Margins this quarter exceeded expectations, but there's always room for improvement, he said.

The nature of the workforce is changing, Rodriguez said, and nearly 35 million workers are part of the "gig economy," working as independent contractors. But those workers, and their employers, all need help managing their finances and taxes.

Finally, when asked about the recent tax cuts, Rodriguez said ADP's tax rate will be going down and that will mean more money being returned to shareholders.

Lightning Round

In the Lightning Round, Cramer was bullish on Johnson & Johnson (JNJ) - Get Report , STMicroelectronics (STM) - Get Report , Broadcom (AVGO) - Get Report , NVIDIA (NVDA) - Get Report , Energy Transfer Partners (ETP) , Minerals Technologies (MTX) - Get Report and Blackberry (BBRY) .

Cramer was bearish on Frontier Communications (FTR) - Get Report , Square (SQ) - Get Report and Snap (SNAP) - Get Report .

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At the time of publication, Cramer's Action Alerts PLUS had a position in LLY, AVGO, NVDA.