Hi Shyam,
I am so glad you posted, and welcome to you. I am so sorry to hear about the difficulties you are facing but you have taken a great, first positive step by talking here.
I think that it is important to look at things from a different side sometimes even if it looks like there is no good side. Most of the time we can't see that there is something worth making us stay and fight on because there is no one to help us find out how we may do that.
You sound like a wonderful father who cherishes time with his children, you are young, 39 years old, so I am guessing your children are young too. Your children and your wife need you and you need to let them be your biggest supporters and have your back all the time.
I had this type of experience with my dad for 20 years during his illness, I lost him not that long ago and I would give anything to have him back, I would have stayed on supporting him no matter for how long because every child loves their father who has been there all their life and raised them with love.
Shyam, you are in Australia and that means that there is always help and treatments here, many treatments that can be excellent. Please look into this and think about how you can turn a negative situation into a positive one.
It helps to talk about it with close friends and family, don't feel that it is not good to do so because they can be your biggest supporters and offer ways to help.
Take time to do things with your wife and children that make you happy, such as visit nice places and spend time in nature and just talking.
I know that your situation may not be easy, but if you were overseas back at home and this happened it may be worse because for sure the medical side may not be like here and talking about it would be harder because of how our people view these things culturally. I can say this because i am from overseas too and I know the stigma.
Being in Australia helps a lot and it is so much better for a person no matter the situation because the support here is certainly different, compassionate and better. Please use it for yourself and your wife and kids so that when you are feeling better soon you can look back on this and realise that you did take the right path by staying on to do your best.
Haifa