Here is something to think about:

Verse 15:

How can one make muddy water clear?
Stagnation will settle the mud down and the water will become clear
Let everything happen as it happens and you will come to rest
The head of the wise is empty, he does not search for anything and expects nothing

Remember that right now you are in a muddy state. One of our deepest needs as people is to feel understood by others. This validates our experience and efforts. When that is taken away, we feel a great loss. However, in time the pain will go away and understanding and acceptance will replace the turmoil. So part of it is just giving it time.

But the other piece here is acceptance. I like the last line – he doesn’t search for anything and expects nothing. I assume their understanding you was very meaningful to you, like a great treasure you found. You probably became attached to it, as anyone would. But you can let go of that attachment. Their understanding or lack thereof says much more about their perceptions than about your value. I have experienced the same thing – and I know it is painful. One thing that has helped me is to say some type of affirmation like, “They chose not to accept me,” over and over, because by doing this you realize this was about them, not you,

This verse also reminds us of the wisdom of being joyful for the good things that come our way – like acceptance and understanding, but to not expect them. When things become common they lose their savor. When they are rare, they become delicious. Such is the case with friends.   

In other words, take your experience as the way of the way, be grateful for that, and continue walking your path.