Believing in the struggle of life

I sometimes think that deep within myself I have a belief that life should be a struggle, that peace, joy, comfort etc are somehow secondary to hard work, toil, and grief.

I think this comes from my father who, although brought up in a loving environment, had to go out to work when he was fifteen years old to support his mother (my grandmother) who had been widowed at a young age.

My father is now retired and is healthy and happy. I never faced any of the struggles that he did when he was young as he and my mother provided very well for me and my brothers and sisters. However, I think his strong work ethic and background instilled this (perhaps limiting) belief within me.

How can I explore this further and perhaps create a new belief in it’s place?