I call bull of the "dont' deal with it" part
The deaths in my life started at when I was at a young age (about 11 years old), with a cousin that was murdered when I was still in primary school, followed by my brother dying in a car accident, then another niece dying in a car accident and then many other family members eventually dying of alchol abuse, cancer, old age, domestic abuse etc.
All of the above deaths - I've told myself, just move on, move forward, just go on.
Now, at the age of 30, my life feels like it's falling to pieces. I am petrified of losing any one close to me. Of something bad happening to them. The fear cripples me and I'm left holding on for dear life to all relationships even those that are detrimental to me. For example with an ex.
So no - my advise it NOT to NOT deal with it. Go see a therapist, deal with it, DO NOT push it under the mat becuase it will effect you somewhere in life. Get over it now and get the tools to heal yourself.