Fellow atheists; have you ever experienced anxiety/panic attacks/fear of death? If so what helped you overcome this fear? (cont. in details)?

I’ve always questioned religion/the afterlife since I was a child & eventually I made up my mind none of it made sense and I was I fact an atheist. Along with that came panic attacks and anxiety about death being “the end”. I am 30 & have 3 children. Often I feel guilt that I had children knowing their ultimate fate is death. Has anyone else felt this way and successfully overcome these thoughts?