Hi,
I too have been through a similar experience to yourself being diagnosed this February aged 41, I also have 2 young boys so have been through similar thoughts and feelings.
Initially I feared the worst but as I read more about new therapies and how treatable myeloma is now days, I have been encouraged that it can be managed and treated effectively for many years before potentially needing to be treated again.
I am part way through my induction treatment and it is currently working well ahead of a stem cell transplant in a couple of months time.
Feel free to message me directly if you would like to talk.
George