If you've done the lesson on Emotional Cause and Effect, you'll remember the emotion-behaviour loop.
In terms of that loop, goals are a kind of thought.
For example, can you see a goal emerging from Jam's thoughts in this snippet?
Her hand was stinging, and the blood had started dripping off her palm and onto her shirt. Jam got up quickly and left the studio, closing the door firmly behind her. She paused for a moment, wondering if she should have cleaned up the mess she'd made in there first, but the dampness spreading on her shirt reminded her how bad it would be if her parents came home to find her literally covered in blood. She needed to patch up this wound immediately so she could clean the studio before her blood dried completely into the floors—she'd never be able to hide it from Bitter then.
We can see that in this instance, the goal arises out of an external event that forces the character to respond.
Here are a couple of examples that show events inspiring a character's goal:
The driver dropped him off at the Middletown Rd station around the corner from the Burger King. Deshawn shimmied out of the back, goose in his arms, and bumped the door closed with his hip. He'd been looking at his phone the whole way, trying to figure out the best place to go. There were plenty of vets, but this did not seem like your everyday vet situation, so he'd decided on a specialist wild bird clinic right on Central Park, assuming he could get that far. The bus lady had said trains didn't care what you brought on, so he was going to test that on the 6 Southbound.
The sky cleared, the sun baked, and the fire crossed the first trigger point. Monica started packing her gear while she radioed Jarret. This is going to go bad she thought. The air's too dry, the wind's too fast. If it changes direction, we're all gone. She had to get off this position, but first she had to make sure Jarret knew she was relocating.
To write your own variation:
If you know the emotion-behaviour concept from the Emotion lessons, then you remember that loops cause other loops in an ongoing chain.
Does that mean that goals trigger other goals?