Oh my, I am sorry to hear about your relatonship ending, but it does sound like you had to take a long look at the benefits vs drains on you - and the long run too! It is so good to ehar when someone has a good self care routine, and support too! I just know that grad school, and parenting, and also the financial end of things you mentioned, can all be stressors unto themselves - and they can add up when combined, yes?
It is good to keep in mind that there is an end to the goal - the achieving of the goal! And you are already started to look for employment - and post grad placement, yes?
Keep coming here, vent, share, ask for support - and I am happy to be part of your journey towards your goals. For many of our health goals, sounds like we are at a similar point - learning and getting positive practices began!