Intentional Model Clarification

We know in an UIM that our thoughts create our feelings and our feelings drive our actions and the result is the effect. We know that because we can plug in something that already happened or is currently happening and it fits. But I’m struggling with seeing how that relates to an IM. For example: I created an IM to achieve a certain R and believed it/followed it so my result should have occurred, correct? If I thought the T and felt the F and did the As then according to the model the R should have been achieved. But the R wasn’t achieved. So what went wrong?