Sorry for your troubles mate, as someone else says life has ups and downs and sometimes we get strength from strange places, I worked in NHS for 5 years and after looking at how people manage especially with sick kids I thought my life isn't so bad
I have had some low points, 15 years ago I made decision to turn life support machine off on my dad - I was eldest son and family left it to me, I walked out on other half and our 1 year old son as she was cheating on me and never home while I worked 12 hour shifts (didn't see son for year after) he is 14 now and me and him get on great, mum died of cancer 3 years ago this November
Stay strong for yourself and your family, be there even if they say they don't need you and they are ok just always be around if possible, nip in for tea/coffee/chats etc
good luck in future mate
I have had some low points, 15 years ago I made decision to turn life support machine off on my dad - I was eldest son and family left it to me, I walked out on other half and our 1 year old son as she was cheating on me and never home while I worked 12 hour shifts (didn't see son for year after) he is 14 now and me and him get on great, mum died of cancer 3 years ago this November
Stay strong for yourself and your family, be there even if they say they don't need you and they are ok just always be around if possible, nip in for tea/coffee/chats etc
good luck in future mate