A trigger is an event or a time of the day that triggers your brain to think, all right now it's time. The action is the thing that you have to do - so as soon as you wake up the action is to go to the gym. And the reward could be a sauna at the end of the gym session or a tasty protein shake after the gym session. James Duhigg wrote an entire book on how habits are formed and broken.
When you're starting out as an entrepreneur or early-stage business owner NOTHING is as important as sales. Without sales you don't have customers, without customers you don't have revenue and without revenue, any business will quickly die. There's no argument that sales are mission-critical to the early-stage business, so why do we find it so hard to do?