As someone learns to become secure, they also learn to get their needs met with more foresight.
This makes secure people much less likely to need to be "in flow" to keep their needs met because they actually create flow with a much greater range into the future.
But for those who are insecure, there is a need to first feel that they are allowed to have needs and discern these needs first before they can validate these needs and feel into these needs moment to moment. And then, over time, they learn to extend their foresight and self-care into the future to know what they will need and when they will need it. So over time they will become more and more reliable, needing less and less last minute changes in their engagements, for they will be able to plan ahead and set their life up so it will simply *work*
So if you have someone in your life who constantly seems to change their mind or cancel or alter engagements, just know that they are on the path to becoming more secure, and that this path is paved with met and unmet needs as they learn to engage with their life, their body, their heart, and their animal more effectively.