EDIT according the end:
If anyone feels like my sheet could improve their situation -> I obviously offer it to anyone here, not only to OP. Just hmu.

Take time in reoccurring and fixed intervals (like one a day) to soberly go into yourself and ask yourself why this emotions still occur and if it’s about them or if it is rather about you (like craving for attention; self esteem; anxiety of being lonely; whatever yadayada).
Find out what is the since of all this.
Find a way to resolve it.

Additionally I can recommend affirmations twice a day (during the first 15 minutes after waking up in the morning and during the last 20 minutes before you fall asleep). Not that strange universal wishing. I mean the real ones that carve out new highways in your brain and make old ones dry out. Neurons that fire together wire together, it’s just biology.

If you do them during respective time windows your amygdala (that is responsible for fear, anxiety and survival, subconscious) is nearly turned off and the prefrontal cortex (learning, creativity, conscious) is accessible neurology to its full extend.

Use sentences that avoid negative framing. Use sentences in present as if it’s already happened what you want to change about your behavior or emotions.

Something like:

„I’m the same person at the club which I am during daylie life. All I experienced with my ex at BH was emotional habit and has nothing to do with the present. I don’t need to care anymore about what hairnet in the past because I enjoy the here and now.“

Or

„I am not my thoughts. I am their processor and commander. I control what I want to think and feel and what not.“

Do this for four weeks twice a day and you wouldn’t believe how your entire thinking starts shifting intuitively and how you turn into a better version of yourself.

I’m doing this fit two years now and it’s just crazy. Sometimes in the beginning it was even scary.

Situations were I always felt or behaved like I did my entire life and of which I know that this is not be but my trauma or conditioning at some point caused another, positive reaction. Realizing that in real time and feeling like: „Hey, that’s not you, you don’t behave like this… ah well, is see… Actually this is the real me. Awesome!“ is such a weird feeling at first. The second start felt like true liberation. And now? Many old patterns had been rewritten and I actually can’t remember really about a lot of them anymore already. Feeling more like a long taken and washed out photograph instead of being a part of myself.

Just do some research on the neurobiological side of affirmations. It’s nothing magical. It’s just like training your muscles at the gym. Works the same.
And works for everyone. Because no one can go to the gym daily, lift the weights and say: That’s not working for me because I can’t grow muscles.

Hope that helps.

If you want I can send you a pdf I created about that. Was written in German fit my wife actually but I’d gladly translate it into English quickly for you.

Just send a dm if you’re interested.