where am I

I feel myself slipping away. I feel like there is so much going on around me that I cant seem to find that happy lady I am.
Even with the marvelous news of my fathers health improving I still find myself in this clouded fog.
My relationship is always a concern because I really am not sure what the future hold for us. A friend of mine asked me today what my breaking point was, and I found myself not even being able to answer other than "I don't know".....
I always spend so much time worrying about everyone else than myself. Yet I am consumed with my sadness of never feeling like I am secure in where I am.
My son has dealt with a lot of health issues as of lately. Which has drained me on my energy level and spirit. I am dealing with SSI taking his medical away, which meant getting a lawyer and working extra to pay for her.
I am constantly running on limited sleep during the weekends when my hours are the most, so I can spend time with my Boyfriend and support his son in his athletics.
I know my health is suffering by all this as I have been in the ER with what we believe is Gallbladder issues. My anxiety has been through extremely bad.
When am I going to say enough is enough? What is my breaking point. DO I Even have one. Or am I just always going to be someone who is never selfish enough to say ""WHAT ABOUT ME!!""
I consider myself a very strong independent lady who is always ready for what is next. But ......
I hate that I am so weak in standing up for myself and letting people know that I do need some help and attention now and then.