One of the best way to cope when something like that happens is to have friends or love ones who really care, to comfort you, help fill the void and share the burden or pain together until you get better. . A grieving person needs enough time with love ones or things for comfort to feel better.
Or consume or submerge self in good quality materials (audio, video, books, etc, ) and even foods, drinks, other consumables that can help one cope. If you find one of more good things that help, use them repeatable until you feel even better. Remember to have enough sleep after working really hard or an exercise to refresh yourself
Audios to try:
https://m.youtube.com/watch?v=US4Ywv0koc0&pp=0gcJCfwAo7VqN5tDAnd
https://m.youtube.com/watch?v=mv055536zCwHope you get better eventually