Im not sure if it’s my place to react, but I’ll try. 

I Think that what your experiencing is that the self sacrificing is starting to sabotage you and how you feel about yourself. It’s not providing you with positive energy and makes you bite your lip at times because you might fear the consequences of speaking up.

In a way that makes me think about the reasons for self sacrificing, like Jesus who decided to be nailed to the cros for the sins of others. Is it just a pure form of altruism or is there something more going on like the need for feeling of having a purpose?

I myself have been at times self sacrificing and ended up very much sabotaging my life. I found that next to the altruism which was definitely a part of it there was the hunger to feel significant that was to blame. This feeling of being needed and appreciated was just to nice to cover up the past trauma's but also ended up creating more of it.

I’m not sure if this is the case for you and I’m sure I’m probably projecting my stuf onto you, but when I figured this out and how it was not helping me It was much easier to find a healthy balance between helping others and helping myself.

Take care