Can you give me a list of aspects of cardiovascular diseases that are reversible without much effort?

None. Cardiovascular diseases as a group can be broadly defined I those conditions that are modifiable and unmodifiable. We cannot change our genes, or age, or gender. We can change our diet, do more exercise, and take medications. As you can see, the modifiable conditions do need effort! The good news: not too much effort is needed if one is consistent.