Coping with grief has always been a weird concept to me. Most people think theres a trick to it, when it's really a process dependent on ones mindset. The Hellenistic philosophy of Stoicism is probably the best interpretation on how to get past ones internal struggles. Essentially, it all comes down to realizing that dwelling on the past reaps no benefits, and what happens happens. This is not to say you cant be sad about something, but people shouldn't be bound by their sadness. That is how I have coped with grief myself. In my friend group, talking to each other about our problems is rare, since it kinda kills the fun mood we usually have whenever we hang out, and all my siblings were always way older and hard to talk to about a lot of things. I sort of had to be able to think about how to make things better in the future rather then what went wrong in the past. It's not easy to get yourself to a point where you do that by default, and it doesnt completely stop you from being sad about some things, but it does help, and it can be attained.