Under these circumstances the suicide or suicide attempt may appear to be without reason, to come from nowhere and to be executed by a person who appears to have a pretty nice life. These suicidal tendencies are usually part and parcel of a deeper more complex psychological or psychiatric disorder. While internal suicidal triggers are harder to see from the outside the warning signs are usually present regardless of whether an attempt is situational/reactionary or psychological in nature. Suicide attempts brought on by a psychological disorder are more likely to be successful on the first try, they are often planned and thought out over a period of time and the suicidal person normally makes gestures seeking closure with those closest to them shortly beforehand.
The most common internal causes of suicide or suicidal behavior are clinical depression, psychiatric disorders or chemical imbalances.