There is no gimmick.

However.

Find the Starbucks the furthest away from you. Go there. Pick something from the menu you've never had. Look for any discarded newspapers. Pick it up, read the headlines and finish your beverage. Then look for any print ads for sales, specials, anything.

For example, 50% off all mattresses and bedding at JC Penny's. Go there, look at their mattresses and bedding. Then decide for yourself whether JC Penny wasted money on their print ad. Tell the employee there. Have them look at you weird. Ask them what their favorite restaurant is in the area. Go there. If you have eaten there before, pick something from the menu you have never eaten. If not, pick something at absolute random.

Continue this pattern all day. Turn life into a quest. It at least keeps you doing something. That's the important thing. This has seriously worked for me on my worst days.