Differentiating principles and values sounds pedantic, but it's important to differentiate the concepts. You choose your values, but your values have no impact on principles. Conversely, principles, can have a huge impact on your ability to live life according to your values. When your values and principles are out of alignment, you're bound for some suffering.
Stephen Covey differentiating principles and values:
Principles apply at all time in all places. They surface in the form of values, ideas, norms, and teachings that uplift, ennoble, fulfill, empower, and inspire people. The lesson of history is that to the degree people and civilizations have operated in harmony with correct principles, they have prospered. Correct principles are like compasses: they are always pointing the way. And if we know how to read them, we won’t get lost, confused, or fooled by conflicting voices and values