How do you open a durian?
Put the knife down, and grasp two sides of the durian with your fingers inside the opening. Pull the durian in half using brute force. This part can take some serious effort. If it's too difficult, cut along the seams to the stem and then use your hands again.
This is the first time that I have done on my own. I almost give up already hahaha. But I really want to eat it so just have to make it done tho. Anyway it was so yummy.