Sun is known as the king of planets.
One can perceive the favourable or unfavourable position of the Sun, with respect to one's particular birth chart, based on the following "symptoms":
Benefic Effects: Good family relations (with friends, siblings, parents & relatives), promotion, financial benefits, faithful servants/subordinates, happiness from children, higher studies, spending on luxuries, performing religious & noble deeds, gains from government/state, income from many sources and wealth from successors.
Malefic Effects: Health problems (abnormal heart beat, epilepsy, blood pressure, paralysis, eye problems), differences with parents & siblings, demotion, obstacles in government/legal affairs, family disputes, fear of vehicles/accident, loss of prestige/fame, heartache or stroke while traveling, illness in family, disappointments, mental agony or stress etc.
It is difficult to judge or ascertain in which category a person exists. It is not usual that every benefic or malefic character would be effecting a person at the time. There can be mixed effects too. To reduce the malefic effects, the under stated remedies can be considered suitable: