John Weaver, a Waukesha, Wis.–based psychologist and business consultant, shares four essential elements for keeping your emotional health intact so that your business stays on track:• Clearly identify what is important to your business. Successful companies recognize the value they’re bringing to the table beyond just their product. For ­example, a jewelry store might see itself as being very caring of the people who come through the door and value the way it treats customers. • Treat tough times as a challenge. Try to see a stressful time as a problem to be solved rather than as a period of defeat. Feel like sitting around and complaining? Instead, look at the issues you’re facing and figure out the next step. • Focus on what’s in your control. You can’t control everything related to your business—the economy, for instance—but there are other things you have a say