To be true to yourself, you cannot only play pretend. You need to acknowledge your emotions in order to work on improving yourself and reach that authentic self that is you, who you are.
Accepting to hear the negative emotions can allow you to find those hidden desires, the ones coming from the heart.
Use a negative emotion to do an introspection by going underneath that emotion to discover the hidden desire, and looking into your belief system to update it, renew it, and see if it resonates with you, not who you were before.
Take the time to free yourself from convictions that you have adopted from others, but that are not in harmony with your authentic self.
Under a negative emotion is a misalignment, the non-said that screams to come out and seek your attention again.
Meditation, alone time, silence and personal retreat can allow such introspection. Mentors and Professionals can help identify what seems impossible to sort out and guide you properly.
It might require courage as it will ask you to open the lid over what might have been pushed down.
In holistic therapies, when we treat the most visible problem, the one for which a person often consults, once this problem is resolved, an older problem that might have supposedly been taken care of resurface. Is was simply buried under another problem, another emotion.
The first thing I have learned in naturopathy is that problems are like wastes in a big bin. The top one comes out first, and when the top one is out, there is now something else on top, and then what is under will get on top when its turn comes up, and so on, until you get to the bottom of the bin.
An introspection is like that garbage can, and emotions like the trash that have piled up over time.
The more you will work on deepening your inner self and discovering who you are and what are those hidden desires under the negative emotions, the closer you will get to harmony.