need advice

hi, so i found the law in 2023 and i have been manifesting my ex since then it’s nearly been 3 years now and i need advice on how to just. calm down a bit?? i give the 3D too much power like recently he became friends with someone i don’t like and they’re getting a bit too close… i’m literally losing my mind and i tell myself this is not happening but deep down i keep feeling this fear that he will start liking her. i have extremely bad anxiety so i don’t know how to deal with my emotions when stuff like this happens and i feel like i’m on fight of flight mode all the time, it’s so exhausting and i’m so lost.

i’ve heard the “it’s already done” and the “just affirm” too many times but it’s hard for me to grasp as i feel like my anxiety overtakes it most of the time.

please help, any advice is appreciated