Final answer:
Internal stressors are caused by personal characteristics, while external stressors are caused by environmental factors.
Step-by-step explanation:
When it comes to stressors, they can be classified into two categories: internal and external stressors. Internal stressors are caused by personal characteristics or traits, while external stressors are caused by environmental factors. Internal stressors include things like self-doubt, perfectionism, and negative self-talk. External stressors can be events or situations such as academic pressure, conflicts with friends or family, or financial problems.