Reagan's economic policies (personal tax rate reduction, deregulation) resulted in one of the biggest booms in History of the United States of America - an economic expansion of unparalleled magnitude: more than 20 million new jobs (half of them "high paying"- i.e. higher than the median wage), reduction in unemployment to 15-year lows, some $30 trillion of wealth created. [The Reagan Boom - Greatest Ever]
The flip side was increased gov't spending, and an increase in the deficit.