Negative thinking helps you look at yourself and others more realistically. Persisting in a chosen career or personal path in spite of difficulties is a good thing—except when it isn't. Sometimes it makes sense to give up unrealistic ambitions and hopes and put your energy into a new endeavor.
Is being negative a bad thing?
The reason for this is that negative events have a greater impact on our brains than positive ones. Psychologists refer to this as the negative bias (also called the negativity bias), and it can have a powerful effect on your behavior, your decisions, and even your relationships.
What causes negative thinking?
A common cold, exhaustion, stress, hunger, sleep deprivation, even allergies can make you depressed, which leads to negative thoughts. In many cases, depression can be caused by negative thinking, itself.