How to stop..?

How do I stop locking all my emotions in my head?

How do I express myself and my needs and wants without my jaw literally locking up tight?

How do I stop getting upset when my SO is playing a game or doing something he enjoys? Even though I never actually express that it upsets me.

How do I learn to put something I want first instead of trying so desperately to please someone else?

How do I not twist their words into something that hurts my feelings?

How do I stop being afraid that they will leave me?

How do I start feeling like I'm enough?

How do I start liking myself?

How do I stop getting aggravated so easily about anything inconvenient to myself?

How do I stop being such a burden?