More than any other source, I learned the many values of appreciation from Abraham, Esther Hicks. Here is a taste of their thoughts for your delight:
“Appreciation is the vibration of alignment with who-you-are. It is the absence of resistance. It is the absence of doubt and fear. It is the absence of self-denial or hatred toward others. Appreciation is the absence of everything that feels bad and the presence of everything that feels good.
Appreciation is that tuned-in, tapped-in, turned-on feeling. Appreciation is vibrational alignment with “who I have become." The state of appreciation is “me being in sync with the whole of that which I am."
Being in a state of appreciation is seeing whatever you are looking at through the eyes of Source. And when you are in that state of appreciation, you could walk down a crowded street with all kinds of things that a lot of other people would find reason to criticize or worry about, and you would not have access to them because your vibration of appreciation is picking out for you things of a different vibrational nature.
A state of appreciation is a state of Godliness. A state of appreciation is being who-you-really-are.
The vibration of true love, that feeling of being in love, that feeling that you have sometimes when you see someone and you feel like you are moving through one another. The feeling that you have when you are looking at the innocence of a child and feeling the beauty and power of that child. Love and appreciation are identical vibrations."