You might remember the meaning of the character 变 with this easy mnemonic:
Bianca was hooked (亅) to cooking but had trouble changing her bad habit of forgetting the lid (亠) again (又) and again. Reminders with dots (丶) and slashes (丿) on the recipe book was no use.
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.