Dear JC:
Reads to me that your current job causes you lots of distress that the pay and flexibility are not alleviating. If you tried all you can to do this job and lessen your distress, and you failed: the distress is significant and ongoing, then look for another job, take the pay cut, have less flexibility, for the purpose of experiencing better mental well being.
Mental well being, with less flexibility and pay, will make you a better father than being distressed on an ongoing basis, as you have been, I understand.
anita