You might remember the meaning of the character 亨 with this easy mnemonic:
In order to wish for a prosperous year, you should put a lid (亠) over your mouth (口) and put a spear (乛) through the lid handle. If you're able to hook (亅) it, you will be blessed with prosperity.
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.