It really is something to be celebrated when achieved. But it is also understandable when people choose to remain in the same place that they find themselves.

It's like a traveller, who although loves travelling, finds a spot that they just feel home in and so stay. It isn't that the yearning for travel switches off, but instead they have chosen something else over it.

Often, that something else is the people you have in your life. Fear of losing them can be a big obstacle from moving towards new goals and changes. It is still not obvious whether Susan will make the changes, but it is obvious she wants to.