Grief allows you to let go of ...

Grief allows you to let go of something you have lost only when you begin to accept what you now have in its place. As our mind clings to the familiar, to our established expectations, we can become trapped in feelings of disappointment, confusion, anger, that create our own internal worlds of suffering.
 Daniel J. Siegel

Quotes from the same author

From early infancy, it appears that our ability to regulate emotional states depends upon the experience of feeling that a significant person in our life is simultaneously experiencing a similar state of mind.
 Daniel J. Siegel
Each of us needs periods in which our minds can focus inwardly. Solitude is an essential experience for the mind to organize its own processes and create an internal state of resonance. In such a state, the self is able to alter its constraints by directly reducing the input from interactions with others. (p. 235)
 Daniel J. Siegel
Adolescents who are absorbing negative messages about who they are and what is expected of them may sink to that level instead of realizing their true potential. As Johann Wolfgang von Goethe wrote, Treat people as if they were what they ought to be and you help them become what they are capable of being.
 Daniel J. Siegel
The number of possible "on-off" patterns of neuronal firing is immense, estimated as a staggering ten times ten one million times (ten to the millionth power). The brain is obviously capable of an imponderably huge variety of activity; the fact that it is often organized and functional is quite an accomplishment!
 Daniel J. Siegel
We now know that the way to help a child develop optimally is to help create connections in her brain—her whole brain—that develop skills that lead to better relationships, better mental health, and more meaningful lives. You could call it brain sculpting, or brain nourishing, or brain building. Whatever phrase you prefer, the point is crucial, and thrilling: as a result of the words we use and the actions we take, children’s brains will actually change, and be built, as they undergo new experiences.
 Daniel J. Siegel