Read the diagram from right to left. Each action on the right is there in order to get a need in the middle, and both needs serve the ultimate goal on the left.
The line between the two actions marks the conflict: you feel you can't do both. That line is where most hidden assumptions sit.
Read each arrow as a sentence: “In order to get [need], I must [action] because…” Anything after “because” is an assumption you can test.