All through life, things change or turn out to be not what we expect.
This requires adjustments on our parts, a reinventing of who we are by re-evaluating what we want, what we value, what we don't want, what we don't value.
Life is fluid, and we go with the flow normally. When something major happens and we lose what we value, love, and want then we re-evaluate and reinvent, if necessary.

A job that pays a lot may not be desirable at all stages of our life. If how we view and value money changes, motivation could be affected.
Conversely, if the ability to make a certain amount of money we are used to making changes drastically, motivation could be affected.
It's a time to question what is important, and where to go from here.