Mothering involves the capacity to think and care about others. It can be hard at times to balance this care with one's own care. Caring for others takes time and energy, physical and mental. It means we are putting ourselves into the shoes of others.
As children grow we start to separate from their everyday needs. They start to become responsible for their own needs being met. They can still turn to their parents for support and comfort, even as they become young adults.
This means mothers can feel constantly pulled between their own needs and the ongoing needs of their children. Finding ways to maintain one's own interests and sense of self require space and time. It can be easy to lose sight of who one has become and whether mothering fits within the overall identity.
Mothering can be the most important role a person plays but it necessarily needs to exist alongside the mother's other important roles - partner, daughter, sister, worker, artist, friend, etc. Finding the balance between all of these roles can be the greatest life challenge.