I found out a better way of brainstorming in ET’s latest video stream.

The way I usually did brainstorming:

1. Think of a topic
2. Think of some topic categories
3. Brainstorm about those topic categories until satisfied

The better way of doing brainstorming:

1. Think of a topic
2. Brainstorm freely
3. Organise into categories after the brainstorming
4. Repeat #2 & #3 until satisfied

The first example might get you stuck within the categories you first thought of. The second example does not limit your brainstorming in that way but lets you brainstorm freely, independent of category. When you are satisfied with your brainstorming you can organise the whole thing into categories for a better overview.