I for one lost my wife suddenly and tragically. It's never fun. You probably want to fully laugh but you can't. You won't be able to for months. My advise to you is remember the good time and remember his legacy. If you were that close to your brother he was a good person. Try every day to make the world a better place.

And from experience i can say you'll take with you going forward new memories that you never thought existed and a whole new outlook on what he left this world like. Take that and hold it close. Work through this in the grieving stage. You're going to get angry, I can tell you. It's not fun but it's necasary. But you will come out of all this with a new appreciation on what life is, and should be. Use this to enlighten yourself.

This is going to be the toughest time you've ever faced, your greatest advisory. He is beside you in strength, in weakness and in humor. I know this is been quoted and said before but the best thing I learned through a situation similar is do not worry about what is truly not important, the only true thing that is important is the times and memories shared and what our legacy will be when we leave this earth. Your brother sounds like great guy and has left a great legacy, in the end that's all we can hope to leave. Cheerios the great times you spent together.

TLDR: life is full of bs stress, enjoy it and appreciate those around you.

PS -This is from my phone I can only imagine the spelling and grammar mistakes after a few drinks. Be kind :)