It is not without difficulty to get rid of these harmful habits.

要克服这些有害的习惯并不是没有难度的。

youdao

Breaking bad habits is very important also, points to his good and to clear yourself what is harmful habits.

改掉坏习惯也很重要，分清楚对自己好的和对自己有害的习惯是哪些。

youdao

Stress, unhealthy diet, lack of exercise, and other harmful habits can all contribute to the deterioration of the brain even at an early age of 30.

精神压力，不健康饮食，缺乏活动及其它有害习惯都促成了大脑在30岁就开始退化。

youdao

Finally, I encourage young people to focus on things they'd like to improve about themselves that they can potentially change (such as becoming a better student, musician or athlete) and try their best to be strong and healthy by eating a well-balanced nutritious diet, getting at least one hour of exercise daily, and avoiding harmful habits such as smoking cigarettes or using drugs.

CNN: What can I do to grow taller?