My therapist says i need to focus on myself and let go of the past especially with relationships which sounds great but idk how to do that i don't really know who i am without a partner to base my personality on. Mostly this has to do with me dwelling on a past toxic relationship that im trying to get over. Im going no contact and trying to focus on myself but I feel like i have to define myself at the same time i never know who i am bc i feel like im whatever emotion im feeling in that moment how do you deal with an unstable sense of self?