Success
So Evin's new plan was more about clarity and focus. He started treating this issue as a psychological barrier of some sorts.
'What do I want to achieve with spell gestures?' Evin would ask himself and write his answers on a piece paper with large, bold fonts. Just knowing about one's goals sometimes didn't quite cut it, but the next best thing was to try writing it down on paper and then write out possible solutions.
The human brain was pitifully easy to delude and motivate. Just by putting something down on paper would make it feel like it achieved something great, making it more motivated to finish a task. Especially for a vague task like this.
If it was a more complex task and Evin knew exactly what he was going to do, then this move wouldn't really do much to motivate him.