I am so sorry I can feel you are having a really hard time,it seems you are trying to focus on too many things ,no wonder you are stressed with the long hours .Firstly I think that you have to focus on whats best for your daughter and if your, ex has a home for her some shared responsibility may be a good thing, who ever she is living with, I can see that you are having a hard time with that , children do need both parents in their lives where it is possible .I think your idea of finding a job nearer home is a good thing so that is something to focus on getting her out of the door at 5-30 am must be very hard for you both.It actually doesnt matter that you didnt ask for this , it is what it is now and you hope it will get better so you need to begin there Now how do you make it better for you and her. Allow her to go to her Mom s and share the days more so that the child also is part of her moms life, see about getting that job nearer home it will ease the burden on your life ..Remember nothing stays the same , your child will get older, focus on the positive things you have ,I know thats hard when you are down, it is your thoughts making you feel worse, so when you feel the negativity creeping up,try to switch it off,.get busy ,ground yourself. Make sure you get some time out at weekends to relax and have some visits with family or friends ..I sympathise with you ,I can see you are doing your best for her..