Use frustration as fuel without letting it design the vehicle.

Frustration will keep you moving, and it will also design the wrong thing if you let it. Whole projects get shaped by irritation and end up carrying the grievance in their structure, built to prove a point rather than to work well. The energy is worth using. The design decisions are better made when the feeling has cooled.

Use frustration for the parts that are pure effort, the grinding tasks that need force more than judgment. Save the choices about direction and shape for a calmer day. The output tends to be better and the frustration gets fully spent either way.