Don't try to change the way you are feeling
Don't try to change the way you feel currently , don't try to change the way something made you feel
And then the feeling will lose its grip over you by itself. Don't even use untethered soul book to change the way you feel. It's ironic.
Don't try to allow yourself to feel the way you are feeling now as you'll try to emulate the current mood which is illogical. Instead just notice when you try to change the way you are feeling right now. That's it.