Hello MissMimi,
I struggle with motivation too, especially when you have alot on your mind. Take some pressure off, and when you are feeling a little more relaxed make time for a gym session, you will find that going will give you a little boost, and the next session will be alot easier and the momentum should build from there. I'm in a similar boat to you, similar weight,similar goals and have a balancing act of supporting a busy DH, and two young daughters not yet at school. Finding the quality time for gym and even meal planning etc is so hard.
Losing weight seems to be easier when im more relaxed and not putting pressure on myself..... dont put yourself under pressure for too many things as you likely feel overwhelmed??