Reflecting on past milestones like 50,000 and 75,000 reveals them as profitable buying opportunities, with investors earning double-digit returns even from earlier 'record high' levels. The recent 10,000-point increase from 70,000 to 80,000 signifies a 14.4% growth, while reaching 90,000 from 80,000 will necessitate a 12.5% gain. Maintaining a consistent investment approach remains wise, irrespective of market highs.