Abnormality is a very difficult one to define as every culture, time period, and society has a unique set of standard norms, and any departure from these could easily be seen as abnormal
This statistical description of abnormality doesn't take into account any desirability of behavior, as having a very high IQ is abnormal but not a negative quality
It is extremely difficult, if not impossible, for any single individual to meet all six of these conditions, and opinions vary wildly on what constitutes ideal mental health
For thoughts to be classified as obsessions according to the DSM, they must be unwanted, impossible to ignore, and not caused by anything else like medical treatment or substance abuse