I'm angry that my sister is dead.

Damn. I'm sorry to hear that.

They deal with it by going to a doctor or hospital and getting help. Get help, please.

Going to a hotel isn’t a bad idea. A change of scenery can def help but it’s not a final solution in helping you cope. When my mom unexpectedly passed, I sought out a counselor. That actually helped me out a ton and I was able to properly grieve and cope. I suggest you do the same. Best of luck my friend.

Do you have a PCP?
If so, talk to them

There are also a lot of counselors & therapists that do tele-health now
You need to talk to someone

Only time can heal the pain caused by the loss of a loved one. In the short term, if you are having severe insomnia you should seek medical attention immediately. Sometimes you just need to let your emotions consume you and cry.

You’re not alone. Seek professional help.

Dollar burgers and 2 dollar high lives at Ivar’s oughta cheer you up baw

I've been dealing with death it seems for decades now so I seem to just roll with the punches generally. But my brother died unexpectedly late last year and it did throw me for a bit of a loop, though it was a few weeks later that it hit me.

See someone, a grief counselor is a good start, if your sister was in hospice care, they likely have someone on staff or someone they recommend. As for insomnia, perhaps a hotel would help, also I find two Benadryl usually works wonders for me but sometimes I wake back up right at the 4-hour mark, If the timing allows, I will take another dose to get the next 4. Just limit that to the occasional thing.

My condolences. I would suggest that when you think of your sister, try to remember happy times together and think good thoughts about her.

Maybe find a grief counselor--someone to talk to.
So sorry!

I’m so sorry man.
Small groups. Find some local small groups that you can attend. You don’t have to say a word. Just go and listen to what others have to say that have been in similar situations.

Also, pray. Tell God what you are feeling. Anger and all. Ask Him for help. He will 100% help you. Take my word for it.

What city are you in?
I only ask because we could help you find some small groups.