As much as we try to avoid it (and as a society, we reallllly try to avoid it), negative emotion is part of the human experience.
I wish someone had told me this - it would have saved me a TON of time resisting negative emotion, which just created MORE negative emotion. I spent a lot of time numbing out in order to not feel. I wasn't aware that not numbing out the negative also numbed out true joy.
I was so afraid that if I leaned into my sadness, that I'd fall into an abyss and never make it back. My sadness felt overwhelming and unending.
I wish I had known that an emotion lasts only 90 seconds in your body.
I wish I had known that I have power over my emotions. I truly thought that my emotions ruled me -- and they did for a long time. I wasn't aware that I could consciously change my thoughts, and in turn change my emotion.
My life is changed because I learned these lessons, and that life includes a range of emotions - and all of it is ok. It is all part of the (human) experience.