This is more of less what I've done for myself. I have a lot of so called "negative" emotions such as anger, hatred, envy, and resentment as well as a lust for power and control and I have chosen to call them my "dark side" which I regard as a part of me and I embrace that part of me.

People might say that I'm wrong and I need to attend therapy or my "toxic" emotions might consume me or whatever but I disagree. If anything, said emotions have been a valuable asset for me because they have motivated me to do more with my life and have done more to empower me than any so called "positive" emotions ever have.

As long as you don't let your so called "negative" emotions consume you, I don't see a problem with accepting them as part of you. After all, we're all human and emotions such as sadness and anger are just as much a part of the human condition as happiness and love.